Question: Answer the following question given this paragraph:      Q: What kind of organism causes the often fatal lung disease tuberculosis?   A:
OPTIONS:
- pathogens
- virus
- algae
- bacteria
Answer: bacteria

Question: Answer the following question given this paragraph:   Individual nucleotides can be linked together through their phosphate groups to form nucleic acid polymers. Once constructed, DNA generally exists as two strands that are linked together by hydrogen bonds, producing a double-helical structure (see Figure below ).   Q: Individual nucleotides can be linked together through their phosphate groups to form?   A:
OPTIONS:
- atoms
- nitrous acid polymers
- dna
- nucleic acid polymers
Answer: nucleic acid polymers

Question: Answer the following question given this paragraph:   Blood vessels help regulate body processes by either constricting (becoming narrower) or dilating (becoming wider). These actions occur in response to signals from the autonomic nervous system or the endocrine system. Constriction occurs when the muscular walls of blood vessels contract. This reduces the amount of blood that can flow through the vessels (see Figure below ). Dilation occurs when the walls relax. This increases blood flows through the vessels.   Q: What structures of the cardiovascular system help regulate body processes by either constricting or dilating?   A:
OPTIONS:
- muscles
- cartilage
- capillaries
- blood vessels
Answer:
blood vessels