Question: Which of the following is a correct statement about the cohesion-tension theory for the ascent of water in the xylem?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following is a correct statement about the cohesion-tension theory for the ascent of water in the xylem?
 A. The evaporation of water from leaf mesophyll cells generates tension in the water column.
 B. Water moves from a source region with high hydrostatic pressure to a sink region with low hydrostatic pressure.
 C. The cohesion of water molecules is responsible for the formation of embolisms (air bubbles) in the water column.
 D. Living cells of the xylem provide the main conduit for an ascent of water.
Answer:


Question: In fungi, cell walls are reinforced by which of the following?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In fungi, cell walls are reinforced by which of the following?
 A. Chitin
 B. Silica
 C. Lignin
 D. Collagen fibers
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 fungi, cell walls are reinforced by which of the following?
 A. Chitin
 B. Silica
 C. Lignin
 D. Collagen fibers
Answer:


Question: In fungi, cell walls are reinforced by which of the following?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In fungi, cell walls are reinforced by which of the following?
 A. Chitin
 B. Silica
 C. Lignin
 D. Collagen fibers
Answer:


Question: In fungi, cell walls are reinforced by which of the following?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In fungi, cell walls are reinforced by which of the following?
 A. Chitin
 B. Silica
 C. Lignin
 D. Collagen fibers
Answer:


Question: In fungi, cell walls are reinforced by which of the following?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In fungi, cell walls are reinforced by which of the following?
 A. Chitin
 B. Silica
 C. Lignin
 D. Collagen fibers
Answer:


Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?
 A. It is passive.
 B. It depends on DNA.
 C. It requires ATP.
 D. It translocates starch.
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 plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?
 A. It is passive.
 B. It depends on DNA.
 C. It requires ATP.
 D. It translocates starch.
Answer:


Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?
 A. It is passive.
 B. It depends on DNA.
 C. It requires ATP.
 D. It translocates starch.
Answer:


Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?
 A. It is passive.
 B. It depends on DNA.
 C. It requires ATP.
 D. It translocates starch.
Answer:


Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: In plants, proton pumps are involved in the process of loading sugars into the phloem for transport. Which of the following is true about this process?
 A. It is passive.
 B. It depends on DNA.
 C. It requires ATP.
 D. It translocates starch.
Answer:


Question: Which of the following characteristics is predicted for an early-successional plant community?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following characteristics is predicted for an early-successional plant community?
 A. High niche divergence among co-occurring species
 B. High ratios of primary production to standing-crop biomass
 C. High frequency of K-selected species
 D. High detrital biomass
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 characteristics is predicted for an early-successional plant community?
 A. High niche divergence among co-occurring species
 B. High ratios of primary production to standing-crop biomass
 C. High frequency of K-selected species
 D. High detrital biomass
Answer:


Question: Which of the following characteristics is predicted for an early-successional plant community?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following characteristics is predicted for an early-successional plant community?
 A. High niche divergence among co-occurring species
 B. High ratios of primary production to standing-crop biomass
 C. High frequency of K-selected species
 D. High detrital biomass
Answer:


Question: Which of the following characteristics is predicted for an early-successional plant community?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following characteristics is predicted for an early-successional plant community?
 A. High niche divergence among co-occurring species
 B. High ratios of primary production to standing-crop biomass
 C. High frequency of K-selected species
 D. High detrital biomass
Answer:


Question: Which of the following characteristics is predicted for an early-successional plant community?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following characteristics is predicted for an early-successional plant community?
 A. High niche divergence among co-occurring species
 B. High ratios of primary production to standing-crop biomass
 C. High frequency of K-selected species
 D. High detrital biomass
Answer:


Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?
 A. Fibers, phloem parenchyma, companion cell, sieve tube
 B. Phloem parenchyma, fibers, bundle sheath, tracheids
 C. Companion cells, phloem parenchyma, fibers, sieve tube
 D. Bundle sheath, phloem parenchyma, companion cell, sieve tube
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 is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?
 A. Fibers, phloem parenchyma, companion cell, sieve tube
 B. Phloem parenchyma, fibers, bundle sheath, tracheids
 C. Companion cells, phloem parenchyma, fibers, sieve tube
 D. Bundle sheath, phloem parenchyma, companion cell, sieve tube
Answer:


Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?
 A. Fibers, phloem parenchyma, companion cell, sieve tube
 B. Phloem parenchyma, fibers, bundle sheath, tracheids
 C. Companion cells, phloem parenchyma, fibers, sieve tube
 D. Bundle sheath, phloem parenchyma, companion cell, sieve tube
Answer:


Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?
 A. Fibers, phloem parenchyma, companion cell, sieve tube
 B. Phloem parenchyma, fibers, bundle sheath, tracheids
 C. Companion cells, phloem parenchyma, fibers, sieve tube
 D. Bundle sheath, phloem parenchyma, companion cell, sieve tube
Answer:


Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?

college_biology

Choices:
- A
- B
- C
- D

Question:
Question: Which of the following is the symplastic pathway for the movement of sucrose from the site of photosynthesis in mesophyll cells into the phloem?
 A. Fibers, phloem parenchyma, companion cell, sieve tube
 B. Phloem parenchyma, fibers, bundle sheath, tracheids
 C. Companion cells, phloem parenchyma, fibers, sieve tube
 D. Bundle sheath, phloem parenchyma, companion cell, sieve tube
Answer: