What important metabolic intermediate does not cross the inner membrane of the mitochondria?

A. Pyruvate
B. ATP
C. Acetyl-CoA
D. Oxygen


Answer: C

Biology & Microbiology

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a. polyphyletic; Mesozoic b. paraphyletic; Cenozoic c. monophyletic; Paleozoic d. paraphyletic; Paleozoic e. polyphyletic; Cenozoic

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How many genes are involved in determining skin color?

a. 1 b. 2 c. 10 d. 20 e. more than 100

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In the reaction 6CO2 + 6H2OC6H12O6 + 6O2 carbon dioxide is one of the

a. reactants b. products c. enzymes d. catalysts

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In moving a molecule of oxygen from the air to a muscle cell, which organ system(s) is(are)

involved?

a. respiratory b. circulatory c. nervous d. all of these

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