During hard running if muscles lack oxygen how can they still get energy?
Answer and explanation
Correct answer: By anaerobic respiration producing lactic acid
During intense running, the oxygen supply may not meet the muscles’ immediate energy demand. Muscle cells then partially break down glucose anaerobically, producing a small amount of ATP and lactic acid rather than completing oxidation to carbon dioxide and water. Lactic acid accumulation is associated with fatigue or cramps. Therefore option A is correct; photosynthesis, bile, and nephrons do not provide this pathway.
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What is the correct answer to this question?
By anaerobic respiration producing lactic acid
Why is this the correct answer?
During intense running, the oxygen supply may not meet the muscles’ immediate energy demand. Muscle cells then partially break down glucose anaerobically, producing a small amount of ATP and lactic acid rather than completing oxidation to carbon dioxide and water. Lactic acid accumulation is associated with fatigue or cramps. Therefore option A is correct; photosynthesis, bile, and nephrons do not provide this pathway.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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