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During anaerobic respiration in yeast, glucose is converted mainly into:
ALactic acid and water
BEthanol and carbon dioxide
CPyruvate and oxygen
DGlucose and starch
Answer & Solution
Correct answer: B. Ethanol and carbon dioxide
1. Anaerobic respiration takes place without oxygen.
2. In yeast, glucose undergoes ethanol fermentation.
3. This produces ethanol and carbon dioxide along with some energy.
4. Lactic acid is produced by bacterial fermentation, not yeast, so that is the trap.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 12 Plant Anatomy and Plant Physiology "Anaerobic respiration", p.191_
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