A diet rich in which vitamins may reduce the risk of free radicals that can cause health problems?
A. D and C
B. D, C, and E
C. C and B12
D. B12, C, and E
E. C, E, and A
Answer: E
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What molecule(s) link the light reactions (stage 1 of photosynthesis) to the Calvin cycle (stage 2 of photosynthesis)?
A. The electron shuttles (ATP and NADPH) B. The water C. The sugars D. The oxygen and carbon dioxide molecules
A scientist looking through a microscope at a piece of shoulder muscle would see which of the following features?
A. striated with unbranched fibers B. striated with branched fibers C. nonstriated with unbranched fibers D. nonstriated with branched fibers E. None of the answers for this question are correct.
Which of the following hormone-action pairs is mismatched?
A. oxytocin-suckling B. cortisol-glucose regulation C. aldosterone-sodium reabsorption D. atrial natriuretic peptide-muscle contraction E. testosterone-secondary sex characteristics
Bacteriophage, unlike animal viruses, often have special viral-specific enzymes carried in the capsid, which enter the host cell at the same time as the nucleic acid
Indicate whether this statement is true or false.