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For each molecule of glucose, how many times does the TCA cycle proceed?

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For each molecule of glucose, how many times does the TCA cycle proceed?

(a) 1

(b) 2

(c) 3

(d) 4

This question was addressed to me in semester exam.

The origin of the question is Aerobic Respiration topic in section Nucleus & Aerobic Respiration of Cell Biology

1 Answer

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The correct choice is (b) 2

Explanation: Since each molecule of glucose gives off two pyruvate molecules through the process of glycolysis, the cycle operates twice for each molecule of glucose.

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