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Question
Muscle cells engaged in vigorous activity, build up a high concentration of
Muscle cells engaged in vigorous activity, build up a high concentration of
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Solution
The correct option is C Lactic acid.
If the rate of exercise is increased due to greater muscular activity, a point is reached at which not enough oxygen is supplied to meet the requirements of the muscle cells for aerobic respiration. In the vigorous exercise, glucose in the muscle cells is converted into lactic acid. This conversion does not require any oxygen or produce carbon dioxide. This anaerobic respiration cannot go on for more than a few seconds as the lactic acid/lactate builds up in the muscles and causes cramps, or fatigue and soreness. Therefore, the correct answer is option A.
If the rate of exercise is increased due to greater muscular activity, a point is reached at which not enough oxygen is supplied to meet the requirements of the muscle cells for aerobic respiration. In the vigorous exercise, glucose in the muscle cells is converted into lactic acid. This conversion does not require any oxygen or produce carbon dioxide. This anaerobic respiration cannot go on for more than a few seconds as the lactic acid/lactate builds up in the muscles and causes cramps, or fatigue and soreness.
Therefore, the correct answer is option A.
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