What is the most suitable life-process related reason for muscle pain after running?
Answer and explanation
Correct answer: Formation of lactic acid due to lack of oxygen
The governing concept is anaerobic respiration in muscle cells. During intense or rapid running, the demand for oxygen and ATP can temporarily exceed the oxygen supply. Muscle cells then obtain some energy by partially breaking down glucose, producing lactic acid. Its accumulation is associated with fatigue, pain, or cramps after strenuous activity. Thus A is correct; muscles do not form starch, haemoglobin does not become bile, and digestion does not occur in lungs.
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What is the correct answer to this question?
Formation of lactic acid due to lack of oxygen
Why is this the correct answer?
The governing concept is anaerobic respiration in muscle cells. During intense or rapid running, the demand for oxygen and ATP can temporarily exceed the oxygen supply. Muscle cells then obtain some energy by partially breaking down glucose, producing lactic acid. Its accumulation is associated with fatigue, pain, or cramps after strenuous activity. Thus A is correct; muscles do not form starch, haemoglobin does not become bile, and digestion does not occur in lungs.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Life Processes. Topic: Respiration.
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