Usain Bolt, an Olympic runner, at the end end of a 100 meter sprint, will have more of which of the following in his muscles?
A
ATP
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B
Alcohol
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C
Lactic acid
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D
Carbon dioxide
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Solution
The correct option is D Lactic acid Usain Bolt is an Olympic runner and his muscles perform the continuous activity while running the marathon. During this phase, there is an accumulation of lactic acid in the muscles due to the anaerobic respiration performed by the skeletal muscle cells in the absence of oxygen.