Which linkage forms the backbone of a nucleic acid?

a. A sugar-base-phosphate linkage
b. A sugar-base linkage
c. A base-phosphate linkage
d. A sugar-phosphate linkage


Ans: d. A sugar-phosphate linkage

Biology & Microbiology

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Where in Figure 9-3 is NADPH formed?



a. F
b. 4
c. 3
d. 2
e. B

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The skin microbiome is NOT affected by

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When examining the hierarchy of life, which of the following terms is most inclusive?

a. population b. species c. biosphere d. ecosystem e. population

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Which of the following is TRUE concerning

the C4 pathway? a. It produces large amounts of carbohydrates. b. It feeds into the C3 pathway. c. It is the mechanism of photorespiration. d. It involves the activity of rubisco. e. All of these are true

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