Q

Which of the following statements related to respiration is/are correct? (i) Pyruvate is converted into ethanol and carbon dioxide during fermentation in yeast. (ii) Breakdown of pyruvate using oxygen takes place in chloroplasts. (iii) In muscle cells, pyruvate is converted into lactic acid.

RRB Technicians Grade-III 28/12/2024; 27/12/2024 2024
✓ Answer: A Only (i) and (iii)
Statements (i) and (iii) are correct. Aerobic oxidation of pyruvate occurs in mitochondria, not chloroplasts; muscle cells can convert pyruvate into lactate when oxygen supply is insufficient.
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