Which of the following is NOT a reactant in the Calvin cycle of carbon fixation?

a. ADP
b. CO2
c. glyceraldehyde 3-phosphate
d. NADPH


Answer: A

Biology & Microbiology

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Molecular clocks are usually calibrated based on

A. guesses about the rates of mutations in a particular gene. B. observed rates of mutation in a particular gene. C. the first shared common ancestor for species known from the fossil record. D. comparing the gene to similar genes in other kingdoms. E. the date when two species diverged from a common ancestor.

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If you wear gloves and a lab coat in the lab, why do you need eye protection?

A) to protect your eyes from the liquid that could be splashed and to protect your eyes from being rubbed with contaminated gloves B) to protect your clothes from being touched with contaminated gloves and spills C) to protect your hands from being contaminated with ocular fluid

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All the following are found in both plant and animal cells, except:

a. cell wall b. mitochondria c. cell membrane d. endoplasmic

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Mechanoreceptors are not evenly spaced on your body. What part of the body might be expected to have mechanoreceptors located farther apart?

A) lip B) fingertip C) underside of wrist D) abdomen

Biology & Microbiology