How many oxygen molecules are required in the fermentation of one molecule of glucose to ethanol and CO2?
A.0
B. 1
C. 2
D. 36
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glucose need 2 molecules of oxygen
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Answer:
2 molecules of oxygen are required in fermentation of one molecule of glucose to ethanol and carbon dioxide.
Explanation:
If the oxygen concentration is low, the product of glycolysis is turned into ethanol and carbon dioxide, and the energy production efficiency is low (2 moles of ATP per mole of glucose). If the oxygen concentration grows, pyruvate is converted to acetyl CoA. that can be used in the citric acid cycle, which increases the efficiency to 36 moles of ATP per mole of glucose.
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