Ribonucleic acid (RNA) differs from deoxyribonucleic acid (DNA) in the structure of its _____.
A) sugar
B) phosphate
C) bases
D) bonds
Answer: A) sugar
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The primary reservoir of the Mycobacterium responsible for leprosy is:
a. infected humans. b. infected animals. c. contaminated food. d. contaminated objects.
Metabolomics is based on the premise that ____
a. plant mitochondria are unique to harnessing ATP to develop alternative energy sources b. plant chloroplasts are unique to harnessing light for energy c. harnessing the 200,000 to 1 million different chemicals produced by plant metabolism for human needs is increasingly important d. plant metabolism is difficult to manipulate e. plant metabolism is simple to manipulate
Mammals are different from birds in all these characteristics EXCEPT
A. mammary glands. B. constant body temperature. C. hair. D. young born alive.
Isotopes are different forms of the same element that
A. differ in their number of protons. B. cannot form covalent bonds. C. differ in their number of neutrons. D. cannot form ions. E. are all produced artificially.