Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?
 A. C4 plants fix CO2 as the 4-carbon acid oxaloacetate, while CAM plants fix CO2 as the 5-carbon acid ribulose 1, 5-bisphosphate.
 B. C4 plants fix CO2 in the mesophyll but carry out the Calvin cycle in the bundle sheath, while CAM plants fix CO2 and carry out the Calvin cycle in the mesophyll.
 C. C4 plants fix CO2 in the bundle sheath but carry out the Calvin cycle in the mesophyll, while CAM plants fix CO2 and carry out the Calvin cycle in the bundle sheath.
 D. C4 plants store CO2 as phosphoglycolate, while CAM plants store CO2 as oxaloacetate.
Answer:


Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?
 A. C4 plants fix CO2 as the 4-carbon acid oxaloacetate, while CAM plants fix CO2 as the 5-carbon acid ribulose 1, 5-bisphosphate.
 B. C4 plants fix CO2 in the mesophyll but carry out the Calvin cycle in the bundle sheath, while CAM plants fix CO2 and carry out the Calvin cycle in the mesophyll.
 C. C4 plants fix CO2 in the bundle sheath but carry out the Calvin cycle in the mesophyll, while CAM plants fix CO2 and carry out the Calvin cycle in the bundle sheath.
 D. C4 plants store CO2 as phosphoglycolate, while CAM plants store CO2 as oxaloacetate.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?
 A. C4 plants fix CO2 as the 4-carbon acid oxaloacetate, while CAM plants fix CO2 as the 5-carbon acid ribulose 1, 5-bisphosphate.
 B. C4 plants fix CO2 in the mesophyll but carry out the Calvin cycle in the bundle sheath, while CAM plants fix CO2 and carry out the Calvin cycle in the mesophyll.
 C. C4 plants fix CO2 in the bundle sheath but carry out the Calvin cycle in the mesophyll, while CAM plants fix CO2 and carry out the Calvin cycle in the bundle sheath.
 D. C4 plants store CO2 as phosphoglycolate, while CAM plants store CO2 as oxaloacetate.
Answer:


Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Both C4 and CAM plants employ physiological and biochemical strategies to reduce photorespiration. Which of the following is an accurate comparison of the two strategies?
 A. C4 plants fix CO2 as the 4-carbon acid oxaloacetate, while CAM plants fix CO2 as the 5-carbon acid ribulose 1, 5-bisphosphate.
 B. C4 plants fix CO2 in the mesophyll but carry out the Calvin cycle in the bundle sheath, while CAM plants fix CO2 and carry out the Calvin cycle in the mesophyll.
 C. C4 plants fix CO2 in the bundle sheath but carry out the Calvin cycle in the mesophyll, while CAM plants fix CO2 and carry out the Calvin cycle in the bundle sheath.
 D. C4 plants store CO2 as phosphoglycolate, while CAM plants store CO2 as oxaloacetate.
Answer:


Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?
 A. Thylakoid membrane, inner membrane, outer membrane
 B. Inner membrane, outer membrane, thylakoid membrane
 C. Outer membrane, inner membrane, thylakoid membrane
 D. Strama, outer membrane, inner membrane
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?
 A. Thylakoid membrane, inner membrane, outer membrane
 B. Inner membrane, outer membrane, thylakoid membrane
 C. Outer membrane, inner membrane, thylakoid membrane
 D. Strama, outer membrane, inner membrane
Answer:


Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?
 A. Thylakoid membrane, inner membrane, outer membrane
 B. Inner membrane, outer membrane, thylakoid membrane
 C. Outer membrane, inner membrane, thylakoid membrane
 D. Strama, outer membrane, inner membrane
Answer:


Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?
 A. Thylakoid membrane, inner membrane, outer membrane
 B. Inner membrane, outer membrane, thylakoid membrane
 C. Outer membrane, inner membrane, thylakoid membrane
 D. Strama, outer membrane, inner membrane
Answer:


Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following depicts the correct sequence of membranes of the chloroplast, beginning with the innermost membrane and ending with the outermost membrane?
 A. Thylakoid membrane, inner membrane, outer membrane
 B. Inner membrane, outer membrane, thylakoid membrane
 C. Outer membrane, inner membrane, thylakoid membrane
 D. Strama, outer membrane, inner membrane
Answer:


Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT
 A. peptidoglycan synthesis
 B. protein synthesis
 C. DNA synthesis
 D. reverse transcriptase
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT
 A. peptidoglycan synthesis
 B. protein synthesis
 C. DNA synthesis
 D. reverse transcriptase
Answer:


Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT
 A. peptidoglycan synthesis
 B. protein synthesis
 C. DNA synthesis
 D. reverse transcriptase
Answer:


Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT
 A. peptidoglycan synthesis
 B. protein synthesis
 C. DNA synthesis
 D. reverse transcriptase
Answer:


Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Antibiotics that affect bacterial cells interfere with all of the following EXCEPT
 A. peptidoglycan synthesis
 B. protein synthesis
 C. DNA synthesis
 D. reverse transcriptase
Answer:


Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are
 A. not actively carrying out transcription
 B. produced only during mitosis
 C. produced by repeated rounds of DNA replication followed by nuclear division
 D. multiple copies of a single chromosome
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are
 A. not actively carrying out transcription
 B. produced only during mitosis
 C. produced by repeated rounds of DNA replication followed by nuclear division
 D. multiple copies of a single chromosome
Answer:


Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are
 A. not actively carrying out transcription
 B. produced only during mitosis
 C. produced by repeated rounds of DNA replication followed by nuclear division
 D. multiple copies of a single chromosome
Answer:


Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are
 A. not actively carrying out transcription
 B. produced only during mitosis
 C. produced by repeated rounds of DNA replication followed by nuclear division
 D. multiple copies of a single chromosome
Answer:


Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The polytene chromosomes seen in Drosophila silvarentis with the aid of a light microscope are
 A. not actively carrying out transcription
 B. produced only during mitosis
 C. produced by repeated rounds of DNA replication followed by nuclear division
 D. multiple copies of a single chromosome
Answer:


Question: Which of the following agents will induce polyploidy in a dividing eukaryote?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following agents will induce polyploidy in a dividing eukaryote?
 A. Penicillin
 B. Colchicine
 C. Tetracycline
 D. Puromycin
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following agents will induce polyploidy in a dividing eukaryote?
 A. Penicillin
 B. Colchicine
 C. Tetracycline
 D. Puromycin
Answer:


Question: Which of the following agents will induce polyploidy in a dividing eukaryote?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following agents will induce polyploidy in a dividing eukaryote?
 A. Penicillin
 B. Colchicine
 C. Tetracycline
 D. Puromycin
Answer:


Question: Which of the following agents will induce polyploidy in a dividing eukaryote?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following agents will induce polyploidy in a dividing eukaryote?
 A. Penicillin
 B. Colchicine
 C. Tetracycline
 D. Puromycin
Answer:


Question: Which of the following agents will induce polyploidy in a dividing eukaryote?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following agents will induce polyploidy in a dividing eukaryote?
 A. Penicillin
 B. Colchicine
 C. Tetracycline
 D. Puromycin
Answer:


Question: Which of the following statements about mitochondria and chloroplasts is generally true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about mitochondria and chloroplasts is generally true?
 A. Plants have chloroplasts but no mitochondria; animals have mitochondria but no chloroplasts.
 B. Plants have chloroplasts but no mitochondria; fungi have mitochondria but no chloroplasts.
 C. Plants and fungi have chloroplasts but no mitochondria; animals have only mitochondria.
 D. Plants have both chloroplasts and mitochondria; animals and fungi have only mitochondria.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following statements about mitochondria and chloroplasts is generally true?
 A. Plants have chloroplasts but no mitochondria; animals have mitochondria but no chloroplasts.
 B. Plants have chloroplasts but no mitochondria; fungi have mitochondria but no chloroplasts.
 C. Plants and fungi have chloroplasts but no mitochondria; animals have only mitochondria.
 D. Plants have both chloroplasts and mitochondria; animals and fungi have only mitochondria.
Answer:


Question: Which of the following statements about mitochondria and chloroplasts is generally true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about mitochondria and chloroplasts is generally true?
 A. Plants have chloroplasts but no mitochondria; animals have mitochondria but no chloroplasts.
 B. Plants have chloroplasts but no mitochondria; fungi have mitochondria but no chloroplasts.
 C. Plants and fungi have chloroplasts but no mitochondria; animals have only mitochondria.
 D. Plants have both chloroplasts and mitochondria; animals and fungi have only mitochondria.
Answer:


Question: Which of the following statements about mitochondria and chloroplasts is generally true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about mitochondria and chloroplasts is generally true?
 A. Plants have chloroplasts but no mitochondria; animals have mitochondria but no chloroplasts.
 B. Plants have chloroplasts but no mitochondria; fungi have mitochondria but no chloroplasts.
 C. Plants and fungi have chloroplasts but no mitochondria; animals have only mitochondria.
 D. Plants have both chloroplasts and mitochondria; animals and fungi have only mitochondria.
Answer:


Question: Which of the following statements about mitochondria and chloroplasts is generally true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about mitochondria and chloroplasts is generally true?
 A. Plants have chloroplasts but no mitochondria; animals have mitochondria but no chloroplasts.
 B. Plants have chloroplasts but no mitochondria; fungi have mitochondria but no chloroplasts.
 C. Plants and fungi have chloroplasts but no mitochondria; animals have only mitochondria.
 D. Plants have both chloroplasts and mitochondria; animals and fungi have only mitochondria.
Answer:


Question: How do cyanobacteria differ from green unicellular algae?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: How do cyanobacteria differ from green unicellular algae?
 A. Cyanobacteria reduce sulfur compounds.
 B. Cyanobacteria lack cell walls.
 C. Cyanobacteria have no nuclei.
 D. Green algae produce cell membranes.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: How do cyanobacteria differ from green unicellular algae?
 A. Cyanobacteria reduce sulfur compounds.
 B. Cyanobacteria lack cell walls.
 C. Cyanobacteria have no nuclei.
 D. Green algae produce cell membranes.
Answer:


Question: How do cyanobacteria differ from green unicellular algae?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: How do cyanobacteria differ from green unicellular algae?
 A. Cyanobacteria reduce sulfur compounds.
 B. Cyanobacteria lack cell walls.
 C. Cyanobacteria have no nuclei.
 D. Green algae produce cell membranes.
Answer:


Question: How do cyanobacteria differ from green unicellular algae?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: How do cyanobacteria differ from green unicellular algae?
 A. Cyanobacteria reduce sulfur compounds.
 B. Cyanobacteria lack cell walls.
 C. Cyanobacteria have no nuclei.
 D. Green algae produce cell membranes.
Answer:


Question: How do cyanobacteria differ from green unicellular algae?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: How do cyanobacteria differ from green unicellular algae?
 A. Cyanobacteria reduce sulfur compounds.
 B. Cyanobacteria lack cell walls.
 C. Cyanobacteria have no nuclei.
 D. Green algae produce cell membranes.
Answer:


Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms
 A. hydrogen bonding between the peptide backbone atoms
 B. disulfide bridges between cysteine side chains
 C. carbohydrate moieties attached to polar amino acids
 D. peptide linkages that covalently bond amino acids
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms
 A. hydrogen bonding between the peptide backbone atoms
 B. disulfide bridges between cysteine side chains
 C. carbohydrate moieties attached to polar amino acids
 D. peptide linkages that covalently bond amino acids
Answer:


Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms
 A. hydrogen bonding between the peptide backbone atoms
 B. disulfide bridges between cysteine side chains
 C. carbohydrate moieties attached to polar amino acids
 D. peptide linkages that covalently bond amino acids
Answer:


Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms
 A. hydrogen bonding between the peptide backbone atoms
 B. disulfide bridges between cysteine side chains
 C. carbohydrate moieties attached to polar amino acids
 D. peptide linkages that covalently bond amino acids
Answer:


Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Stabilization of the unique coiled structure of an alpha helix in a protein is primarily attributed to (A) hydrogen bonding between the peptide backbone atoms
 A. hydrogen bonding between the peptide backbone atoms
 B. disulfide bridges between cysteine side chains
 C. carbohydrate moieties attached to polar amino acids
 D. peptide linkages that covalently bond amino acids
Answer:


Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is
 A. the H1 histone
 B. histones H2A, H2B, H3, and H4
 C. the nucleosome core
 D. linker DNA
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is
 A. the H1 histone
 B. histones H2A, H2B, H3, and H4
 C. the nucleosome core
 D. linker DNA
Answer:


Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is
 A. the H1 histone
 B. histones H2A, H2B, H3, and H4
 C. the nucleosome core
 D. linker DNA
Answer:


Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is
 A. the H1 histone
 B. histones H2A, H2B, H3, and H4
 C. the nucleosome core
 D. linker DNA
Answer:


Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The target of digestion of a nucleosome dimer to nucleosome monomers by DNase is
 A. the H1 histone
 B. histones H2A, H2B, H3, and H4
 C. the nucleosome core
 D. linker DNA
Answer:


Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely
 A. a proteobacterium
 B. a spirochete
 C. a member of the genus Chlamydia
 D. an archaeon
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely
 A. a proteobacterium
 B. a spirochete
 C. a member of the genus Chlamydia
 D. an archaeon
Answer:


Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely
 A. a proteobacterium
 B. a spirochete
 C. a member of the genus Chlamydia
 D. an archaeon
Answer:


Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely
 A. a proteobacterium
 B. a spirochete
 C. a member of the genus Chlamydia
 D. an archaeon
Answer:


Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A prokaryote that is thermophilic and methanogenic and has isoprenylglycerol ethers in its membrane instead of phospholipids is most likely
 A. a proteobacterium
 B. a spirochete
 C. a member of the genus Chlamydia
 D. an archaeon
Answer:


Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT
 A. high temperature
 B. high relative humidity
 C. low relative humidity
 D. wind
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT
 A. high temperature
 B. high relative humidity
 C. low relative humidity
 D. wind
Answer:


Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT
 A. high temperature
 B. high relative humidity
 C. low relative humidity
 D. wind
Answer:


Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT
 A. high temperature
 B. high relative humidity
 C. low relative humidity
 D. wind
Answer:


Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: All of the following environmental conditions increase the rate of transpiration from plants EXCEPT
 A. high temperature
 B. high relative humidity
 C. low relative humidity
 D. wind
Answer:


Question: Which of the following statements about embryonic cleavage is NOT true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about embryonic cleavage is NOT true?
 A. The presence of yolk inhibits cleavage.
 B. Telolecithal eggs undergo meroblastic cleavage.
 C. The vegetal pole undergoes cleavage more readily than does the animal pole
 D. The rapid mitotic divisions of cleavage directly give rise to blastomeres.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following statements about embryonic cleavage is NOT true?
 A. The presence of yolk inhibits cleavage.
 B. Telolecithal eggs undergo meroblastic cleavage.
 C. The vegetal pole undergoes cleavage more readily than does the animal pole
 D. The rapid mitotic divisions of cleavage directly give rise to blastomeres.
Answer:


Question: Which of the following statements about embryonic cleavage is NOT true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about embryonic cleavage is NOT true?
 A. The presence of yolk inhibits cleavage.
 B. Telolecithal eggs undergo meroblastic cleavage.
 C. The vegetal pole undergoes cleavage more readily than does the animal pole
 D. The rapid mitotic divisions of cleavage directly give rise to blastomeres.
Answer:


Question: Which of the following statements about embryonic cleavage is NOT true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about embryonic cleavage is NOT true?
 A. The presence of yolk inhibits cleavage.
 B. Telolecithal eggs undergo meroblastic cleavage.
 C. The vegetal pole undergoes cleavage more readily than does the animal pole
 D. The rapid mitotic divisions of cleavage directly give rise to blastomeres.
Answer:


Question: Which of the following statements about embryonic cleavage is NOT true?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following statements about embryonic cleavage is NOT true?
 A. The presence of yolk inhibits cleavage.
 B. Telolecithal eggs undergo meroblastic cleavage.
 C. The vegetal pole undergoes cleavage more readily than does the animal pole
 D. The rapid mitotic divisions of cleavage directly give rise to blastomeres.
Answer:


Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?
 A. Synthesis of ATP
 B. Reduction of NADP+ to NADPH
 C. Release of O2
 D. Reduction of CO2 to sugar
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?
 A. Synthesis of ATP
 B. Reduction of NADP+ to NADPH
 C. Release of O2
 D. Reduction of CO2 to sugar
Answer:


Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?
 A. Synthesis of ATP
 B. Reduction of NADP+ to NADPH
 C. Release of O2
 D. Reduction of CO2 to sugar
Answer:


Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?
 A. Synthesis of ATP
 B. Reduction of NADP+ to NADPH
 C. Release of O2
 D. Reduction of CO2 to sugar
Answer:


Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In eukaryotic photosynthetic cells, which of the following occurs when electrons flow cyclically through the electron transport chain associated with photosystem I?
 A. Synthesis of ATP
 B. Reduction of NADP+ to NADPH
 C. Release of O2
 D. Reduction of CO2 to sugar
Answer:


Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?
 A. Marine birds absorb water from the environment through specialized salt-exchange glands and produce large volumes of dilute urine in the kidneys.
 B. Marine birds absorb salts from the environment through specialized salt-exchange glands and produce large volumes of concentrated urine in the kidneys.
 C. Marine birds excrete salts through specialized salt-exchange glands and excrete small volumes of urine.
 D. Marine birds excrete salts and nitrogenous wastes through specialized nasal glands.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?
 A. Marine birds absorb water from the environment through specialized salt-exchange glands and produce large volumes of dilute urine in the kidneys.
 B. Marine birds absorb salts from the environment through specialized salt-exchange glands and produce large volumes of concentrated urine in the kidneys.
 C. Marine birds excrete salts through specialized salt-exchange glands and excrete small volumes of urine.
 D. Marine birds excrete salts and nitrogenous wastes through specialized nasal glands.
Answer:


Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?
 A. Marine birds absorb water from the environment through specialized salt-exchange glands and produce large volumes of dilute urine in the kidneys.
 B. Marine birds absorb salts from the environment through specialized salt-exchange glands and produce large volumes of concentrated urine in the kidneys.
 C. Marine birds excrete salts through specialized salt-exchange glands and excrete small volumes of urine.
 D. Marine birds excrete salts and nitrogenous wastes through specialized nasal glands.
Answer:


Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?
 A. Marine birds absorb water from the environment through specialized salt-exchange glands and produce large volumes of dilute urine in the kidneys.
 B. Marine birds absorb salts from the environment through specialized salt-exchange glands and produce large volumes of concentrated urine in the kidneys.
 C. Marine birds excrete salts through specialized salt-exchange glands and excrete small volumes of urine.
 D. Marine birds excrete salts and nitrogenous wastes through specialized nasal glands.
Answer:


Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Many marine birds drink seawater yet maintain their internal osmolarity at a constant level that is hypoosmotic to seawater. Which of the following physiological strategies best explains how the birds maintain their tissue osmolarity?
 A. Marine birds absorb water from the environment through specialized salt-exchange glands and produce large volumes of dilute urine in the kidneys.
 B. Marine birds absorb salts from the environment through specialized salt-exchange glands and produce large volumes of concentrated urine in the kidneys.
 C. Marine birds excrete salts through specialized salt-exchange glands and excrete small volumes of urine.
 D. Marine birds excrete salts and nitrogenous wastes through specialized nasal glands.
Answer:


Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?
 A. Moderate sexual size dimorphism
 B. High parental investment
 C. Precocial young
 D. Frequent extrapair matings
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?
 A. Moderate sexual size dimorphism
 B. High parental investment
 C. Precocial young
 D. Frequent extrapair matings
Answer:


Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?
 A. Moderate sexual size dimorphism
 B. High parental investment
 C. Precocial young
 D. Frequent extrapair matings
Answer:


Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?
 A. Moderate sexual size dimorphism
 B. High parental investment
 C. Precocial young
 D. Frequent extrapair matings
Answer:


Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A species of small rodent eats seeds from only one species of pine. In normal years, a pair of these rodents will have a litter of two or three. It is unusual for small rodents to have such small litter sizes. The rodents are most likely to exhibit which other characteristic?
 A. Moderate sexual size dimorphism
 B. High parental investment
 C. Precocial young
 D. Frequent extrapair matings
Answer:


Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?
 A. Organic molecules from decaying matter in the soil that are taken up by the roots
 B. Mineral nutrients dissolved in groundwater that are taken up by the roots
 C. Water that is taken up by the roots and carbon dioxide from the air
 D. Endosperm located in the cotyledons of the acorn
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?
 A. Organic molecules from decaying matter in the soil that are taken up by the roots
 B. Mineral nutrients dissolved in groundwater that are taken up by the roots
 C. Water that is taken up by the roots and carbon dioxide from the air
 D. Endosperm located in the cotyledons of the acorn
Answer:


Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?
 A. Organic molecules from decaying matter in the soil that are taken up by the roots
 B. Mineral nutrients dissolved in groundwater that are taken up by the roots
 C. Water that is taken up by the roots and carbon dioxide from the air
 D. Endosperm located in the cotyledons of the acorn
Answer:


Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?
 A. Organic molecules from decaying matter in the soil that are taken up by the roots
 B. Mineral nutrients dissolved in groundwater that are taken up by the roots
 C. Water that is taken up by the roots and carbon dioxide from the air
 D. Endosperm located in the cotyledons of the acorn
Answer:


Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following sources makes the greatest contribution to the dry mass of organic matter that comprises an oak tree?
 A. Organic molecules from decaying matter in the soil that are taken up by the roots
 B. Mineral nutrients dissolved in groundwater that are taken up by the roots
 C. Water that is taken up by the roots and carbon dioxide from the air
 D. Endosperm located in the cotyledons of the acorn
Answer:


Question: Which of the following must be true in order for evolution to have occurred?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following must be true in order for evolution to have occurred?
 A. The frequencies of some alleles in a population's gene pool has changed over successive generations.
 B. The frequencies of some alleles in a population's gene pool has changed during the organisms' lifetimes.
 C. The frequencies of each allele in a population's gene pool has remained constant over successive generations.
 D. The frequencies of each allele in an organism's genotype has remained constant within the organism's lifetime.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following must be true in order for evolution to have occurred?
 A. The frequencies of some alleles in a population's gene pool has changed over successive generations.
 B. The frequencies of some alleles in a population's gene pool has changed during the organisms' lifetimes.
 C. The frequencies of each allele in a population's gene pool has remained constant over successive generations.
 D. The frequencies of each allele in an organism's genotype has remained constant within the organism's lifetime.
Answer:


Question: Which of the following must be true in order for evolution to have occurred?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following must be true in order for evolution to have occurred?
 A. The frequencies of some alleles in a population's gene pool has changed over successive generations.
 B. The frequencies of some alleles in a population's gene pool has changed during the organisms' lifetimes.
 C. The frequencies of each allele in a population's gene pool has remained constant over successive generations.
 D. The frequencies of each allele in an organism's genotype has remained constant within the organism's lifetime.
Answer:


Question: Which of the following must be true in order for evolution to have occurred?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following must be true in order for evolution to have occurred?
 A. The frequencies of some alleles in a population's gene pool has changed over successive generations.
 B. The frequencies of some alleles in a population's gene pool has changed during the organisms' lifetimes.
 C. The frequencies of each allele in a population's gene pool has remained constant over successive generations.
 D. The frequencies of each allele in an organism's genotype has remained constant within the organism's lifetime.
Answer:


Question: Which of the following must be true in order for evolution to have occurred?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following must be true in order for evolution to have occurred?
 A. The frequencies of some alleles in a population's gene pool has changed over successive generations.
 B. The frequencies of some alleles in a population's gene pool has changed during the organisms' lifetimes.
 C. The frequencies of each allele in a population's gene pool has remained constant over successive generations.
 D. The frequencies of each allele in an organism's genotype has remained constant within the organism's lifetime.
Answer:


Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that
 A. if the benefits gained from the trait exceed the cost of the trait to the animal performing them, that trait will persist in the genome
 B. if the trait reaps the best return for the cost relative to alternative forms of the trait, that trait will win out over the alternative forms
 C. beneficial traits are always worth the cost to the organism in energy and physiology, so those traits will persist in the genome
 D. the relative fitness of an organism must be improved due to a specific trait in order for the trait to remain in a population's gene pool
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that
 A. if the benefits gained from the trait exceed the cost of the trait to the animal performing them, that trait will persist in the genome
 B. if the trait reaps the best return for the cost relative to alternative forms of the trait, that trait will win out over the alternative forms
 C. beneficial traits are always worth the cost to the organism in energy and physiology, so those traits will persist in the genome
 D. the relative fitness of an organism must be improved due to a specific trait in order for the trait to remain in a population's gene pool
Answer:


Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that
 A. if the benefits gained from the trait exceed the cost of the trait to the animal performing them, that trait will persist in the genome
 B. if the trait reaps the best return for the cost relative to alternative forms of the trait, that trait will win out over the alternative forms
 C. beneficial traits are always worth the cost to the organism in energy and physiology, so those traits will persist in the genome
 D. the relative fitness of an organism must be improved due to a specific trait in order for the trait to remain in a population's gene pool
Answer:


Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that
 A. if the benefits gained from the trait exceed the cost of the trait to the animal performing them, that trait will persist in the genome
 B. if the trait reaps the best return for the cost relative to alternative forms of the trait, that trait will win out over the alternative forms
 C. beneficial traits are always worth the cost to the organism in energy and physiology, so those traits will persist in the genome
 D. the relative fitness of an organism must be improved due to a specific trait in order for the trait to remain in a population's gene pool
Answer:


Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: From an evolutionary perspective, the optimality theory as applied to a given trait is best represented by the idea that
 A. if the benefits gained from the trait exceed the cost of the trait to the animal performing them, that trait will persist in the genome
 B. if the trait reaps the best return for the cost relative to alternative forms of the trait, that trait will win out over the alternative forms
 C. beneficial traits are always worth the cost to the organism in energy and physiology, so those traits will persist in the genome
 D. the relative fitness of an organism must be improved due to a specific trait in order for the trait to remain in a population's gene pool
Answer:


Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?
 A. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
 B. The activation energy of the reaction decreases.
 C. The change in free energy of the reaction decreases.
 D. The enzyme is no longer specific for acetaldehyde.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?
 A. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
 B. The activation energy of the reaction decreases.
 C. The change in free energy of the reaction decreases.
 D. The enzyme is no longer specific for acetaldehyde.
Answer:


Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?
 A. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
 B. The activation energy of the reaction decreases.
 C. The change in free energy of the reaction decreases.
 D. The enzyme is no longer specific for acetaldehyde.
Answer:


Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?
 A. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
 B. The activation energy of the reaction decreases.
 C. The change in free energy of the reaction decreases.
 D. The enzyme is no longer specific for acetaldehyde.
Answer:


Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In the presence of alcohol dehydrogenase, the rate of reduction of acetaldehyde to ethanol increases as the concentration of acetaldehyde is increased. Eventually, the rate of the reaction reaches a maximum, after which point further increases in the concentration of acetaldehyde have no effect. Which of the following is true at the maximal rate of reaction?
 A. Nearly all of the enzyme molecules are interacting with acetaldehyde molecules.
 B. The activation energy of the reaction decreases.
 C. The change in free energy of the reaction decreases.
 D. The enzyme is no longer specific for acetaldehyde.
Answer:


Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?
 A. A different polypeptide is produced.
 B. The polarity of tRNA becomes the opposite of that of DNA.
 C. Nucleic acids are methylated.
 D. The gene is now read in the 3′ to 5′ direction.
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?
 A. A different polypeptide is produced.
 B. The polarity of tRNA becomes the opposite of that of DNA.
 C. Nucleic acids are methylated.
 D. The gene is now read in the 3′ to 5′ direction.
Answer:


Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?
 A. A different polypeptide is produced.
 B. The polarity of tRNA becomes the opposite of that of DNA.
 C. Nucleic acids are methylated.
 D. The gene is now read in the 3′ to 5′ direction.
Answer:


Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?
 A. A different polypeptide is produced.
 B. The polarity of tRNA becomes the opposite of that of DNA.
 C. Nucleic acids are methylated.
 D. The gene is now read in the 3′ to 5′ direction.
Answer:


Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following best explains how mutations in DNA can result in the expression of a new phenotype?
 A. A different polypeptide is produced.
 B. The polarity of tRNA becomes the opposite of that of DNA.
 C. Nucleic acids are methylated.
 D. The gene is now read in the 3′ to 5′ direction.
Answer:


Question: A competitive inhibitor of an enzyme exerts its effect by

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A competitive inhibitor of an enzyme exerts its effect by
 A. irreversibly forming covalent links with the enzyme, effectively preventing the enzyme's dissociation from it
 B. irreversibly modifying some of the amino acid residues that help to comprise the enzyme's active site
 C. competing with the substrate molecule for the same enzyme but a different binding site than the substrate binding site
 D. reversibly decreasing the number of enzyme molecules that are available to bind substrates
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: A competitive inhibitor of an enzyme exerts its effect by
 A. irreversibly forming covalent links with the enzyme, effectively preventing the enzyme's dissociation from it
 B. irreversibly modifying some of the amino acid residues that help to comprise the enzyme's active site
 C. competing with the substrate molecule for the same enzyme but a different binding site than the substrate binding site
 D. reversibly decreasing the number of enzyme molecules that are available to bind substrates
Answer:


Question: A competitive inhibitor of an enzyme exerts its effect by

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A competitive inhibitor of an enzyme exerts its effect by
 A. irreversibly forming covalent links with the enzyme, effectively preventing the enzyme's dissociation from it
 B. irreversibly modifying some of the amino acid residues that help to comprise the enzyme's active site
 C. competing with the substrate molecule for the same enzyme but a different binding site than the substrate binding site
 D. reversibly decreasing the number of enzyme molecules that are available to bind substrates
Answer:


Question: A competitive inhibitor of an enzyme exerts its effect by

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A competitive inhibitor of an enzyme exerts its effect by
 A. irreversibly forming covalent links with the enzyme, effectively preventing the enzyme's dissociation from it
 B. irreversibly modifying some of the amino acid residues that help to comprise the enzyme's active site
 C. competing with the substrate molecule for the same enzyme but a different binding site than the substrate binding site
 D. reversibly decreasing the number of enzyme molecules that are available to bind substrates
Answer:


Question: A competitive inhibitor of an enzyme exerts its effect by

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: A competitive inhibitor of an enzyme exerts its effect by
 A. irreversibly forming covalent links with the enzyme, effectively preventing the enzyme's dissociation from it
 B. irreversibly modifying some of the amino acid residues that help to comprise the enzyme's active site
 C. competing with the substrate molecule for the same enzyme but a different binding site than the substrate binding site
 D. reversibly decreasing the number of enzyme molecules that are available to bind substrates
Answer:


Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?
 A. The amplitude of the action potential
 B. The threshold potential
 C. The number of action potentials per second
 D. The number of synapses crossed
Answer:

Context:
The following are multiple choice questions (with answers) about college biology.

Question: Which of the following represents an accurate statement concerning arthropods?
 A. They possess an exoskeleton composed primarily of peptidoglycan.
 B. They possess an open circulatory system with a dorsal heart.
 C. They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources.
 D. They lack paired, jointed appendages.
Answer: B

Question: In a given population, 1 out of every 400 people has a cancer caused by a completely recessive allele, b. Assuming the population is in Hardy-Weinberg equilibrium, which of the following is the expected proportion of individuals who carry the b allele but are not expected to develop the cancer?
 A. 1/400
 B. 19/400
 C. 20/400
 D. 38/400
Answer: D

Question: The presence of homologous structures in two different organisms, such as the humerus in the front limb of a human and a bird, indicates that
 A. the human and bird are polyphyletic species
 B. a human's and bird's evolution is convergent
 C. the human and bird belong to a clade
 D. the human and bird developed by analogy
Answer: C

Question: According to the pressure-flow model of movement of phloem contents, photosynthate movement from source to sink is driven by
 A. an ATP-dependent pressure-flow pump
 B. a water-pressure potential gradient
 C. transpiration
 D. apoplastic diffusion
Answer: B

Question: Which of the following contain DNA sequences required for the segregation of chromosomes in mitosis and meiosis?
 A. Telomeres
 B. Centromeres
 C. Nucleosomes
 D. Spliceosomes
Answer: B

Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?
 A. The amplitude of the action potential
 B. The threshold potential
 C. The number of action potentials per second
 D. The number of synapses crossed
Answer:


Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?
 A. The amplitude of the action potential
 B. The threshold potential
 C. The number of action potentials per second
 D. The number of synapses crossed
Answer:


Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?
 A. The amplitude of the action potential
 B. The threshold potential
 C. The number of action potentials per second
 D. The number of synapses crossed
Answer:


Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: The ability of the brain to detect differences in stimulus intensity is best explained by the fact that which of the following varies with the stimulus intensity?
 A. The amplitude of the action potential
 B. The threshold potential
 C. The number of action potentials per second
 D. The number of synapses crossed
Answer: