The oxygen-dependent reactions required for cellular respiration were originally thought to occur in a linear pathway. By using a competitive inhibitor for one enzyme in the pathway, investigators discovered that these reactions occur in a cycle

What compound served as the inhibitor?
(a) malonate
(b) malate
(c) fumarate
(d) succinate


(a)

Biology & Microbiology

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The morphology of a cell influences its

A) motility. B) metabolism. C) surface-to-volume ratio. D) motility and surface-to-volume ratio

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The inner membrane system of chloroplasts consists of flattened sacs called ________ that form stacks called ________.

Fill in the blank(s) with the appropriate word(s).

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In order to provide more strength and resilience, the human vertebral column normally has how many curvatures?

A. one B. two C. three D. four

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The biological species concept declares an organism to be a separate species if it has undergone

evolution long enough for the emergence of statistically unique traits. _____________ Indicate whether the statement is true or false.

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