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In human muscle cells, when there is a lack of oxygen during sudden activity, pyruvate is converted into:

Question
In human muscle cells, when there is a lack of oxygen during sudden activity, pyruvate is converted into:
Ethanol
Lactic acid
Glucose
Acetic acid
Answer
Lactic acid
Detailed Explanation
When oxygen is insufficient in muscle cells, pyruvate is converted into lactic acid, a three-carbon molecule, which can cause cramps.
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