alleryStart learning →Anaerobic respiration in animal muscle during heavy exercise yields
ACarbon monoxide and water in muscle
BEthanol and carbon dioxide in the cells
CLactic acid that causes muscle fatigue
DGlucose phosphate regenerated for use
Answer & Solution
Correct answer: C. Lactic acid that causes muscle fatigue
1. The chapter notes anaerobic respiration in muscles during low oxygen.
2. Pyruvate is reduced to lactic acid in the cytoplasm.
3. Build-up of lactic acid causes muscle fatigue.
4. Hence option A is correct.
_Source: Selina Concise Biology Class 9, Ch 7 Respiration in Plants (Mistral OCR'd PDF), section on lactic acid_
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