What is the best explanation for muscle cramps after a 400 m race?

Question

What is the best explanation for muscle cramps after a 400 m race? — Exam MCQ

rrbjepyq.in · Accepted Answer

D. In a lack of oxygen, pyruvate is converted to lactic acid. — Source key: D. During anaerobic metabolism in muscle, pyruvate is converted to lactate. Attributing exercise cramps solely to this process is an oversimplification.

rrbjepyq.in · Answer

A. In a lack of oxygen, pyruvate is converted to glucose.

rrbjepyq.in · Answer

B. In a lack of oxygen, pyruvate is converted to ethanol.

rrbjepyq.in · Answer

C. With enough oxygen, pyruvate is converted to lactic acid.

What is the best explanation for muscle cramps after a 400 m race?

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