1
Question
Turns of Krebs cycle required for complete oxidation of one molecule of glucose are
Turns of Krebs cycle required for complete oxidation of one molecule of glucose are
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Solution
The correct option is A 2
Complete oxidation of glucose molecules requires glycolysis, Krebs cycle and electron transport chain. Two molecules of pyruvic acid are produced at the end of glycolysis. Each molecule of pyruvate is then converted to acetyl CoA before entering the Krebs cycle. Hence, for two molecules of pyruvate, two turns of Krebs cycle is required. Hence, for complete oxidation of one molecule of glucose 2 turns of Krebs cycle are required. Thus, the correct answer is '2.'
Complete oxidation of glucose molecules requires glycolysis, Krebs cycle and electron transport chain. Two molecules of pyruvic acid are produced at the end of glycolysis. Each molecule of pyruvate is then converted to acetyl CoA before entering the Krebs cycle. Hence, for two molecules of pyruvate, two turns of Krebs cycle is required. Hence, for complete oxidation of one molecule of glucose 2 turns of Krebs cycle are required.
Thus, the correct answer is '2.'
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