Many antibiotics selectively kill bacteria and not mammalian cells because they block synthesis of the ________.

A. cytoplasm
B. cytoskeleton
C. cell wall
D. nucleus
E. plasma membrane


Answer: C

Biology & Microbiology

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Do any of the dinosaurs appear to be omnivores?

a. Yes b. No

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Opponents of the use of recombinant DNA technology in agriculture argue that the FDA should require the _____ of

food containing transgenic ingredients. a. labeling b. testing c. posting of safe handling guidelines d. cloning e. spreading

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The progeny cells of a B-cell clone are called

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