Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

alcohol and lactic acid

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alcohol and

C O_{2}

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lactic acid and

C O_{2}

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lactic acid only

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Solution

The correct option is D lactic acid only
When we do heavy exercise, sufficient oxygen is not present in the muscle cells for oxidation, so the muscle cells undergo anaerobic respiration giving out lactic acid as a by-product. Accumulation of lactic acid in the muscles cause muscular cramps. On further availability of oxygen, this lactic acid is broken down.

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Similar questions

Question 1
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

(a) Alcohol and lactic acid
(b) Alcohol and $C O_{2}$
(c) Lactic acid and $C O_{2}$
(d) Lactic acid only