Genes that normally prevent cell division are

A) tumor suppressors.

B) transcription factors.

C) proto-oncogenes.

D) oncogenes.


A) tumor suppressors.

Biology & Microbiology

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Which numbers identify structures that are found in ALL prokaryotes?

a. 2 and 4 b. 3 and 4 c. 1 and 5 d. 5 and 9 e. 7 and 8

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The digestion of lipids in humans begins in the

a. large intestine. b. mouth. c. pancreas. d. small intestine. e. stomach.

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At the end of glycolysis, the original carbons of the glucose molecule form

A) two molecules of citric acid. B) two molecules of pyruvate. C) six molecules of carbon dioxide. D) two molecules of fructose. E) two molecules of NADH.

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A chemical used to reduce potential pathogens on the skin is a(n)

A) antiseptic. B) disinfectant. C) sanitizer. D) sterilizing agent. E) degermer.

Biology & Microbiology