_______________ uses uracil as a substrate.

a) DNA Polymerase III
b) Peptidyl transferase
c) Aminoacyl-tRNA synthase
d) RNA Polymerase


Ans: d) RNA Polymerase

Biology & Microbiology

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Cyclosporin A

A. is a relatively general immunosuppressive agent. B. suppresses T cell proliferation. C. activates macrophages. D. stimulates antibody production. E. is a relatively general immunosuppressive agent AND suppresses T cell proliferation.

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Bull dogs have been bred to have such a large head size that they can no longer give birth naturally. The process by

which these dogs changed over time is called ____.

a. artificial breeding b. artificial selection c. artificial evolution d. artificial engineering e. artificial insemination

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Some resident intertidal fish include all the following except

a. rock eels. b. lamprey eels. c. gobies. d. sculpins. e. blennies.

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Fats composed of fatty acids that have double bonds in the fatty acids and have fewer than the maximum number of hydrogen atoms are:

A. saturated B. made of glycerol plus two fatty acids C. liquids at room temperature D. solid at room temperature E. generally found in animal fats

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