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Question
How many carbon dioxide molecules are produced when two molecule of pyruvic acid is fed in Kreb's cycle?
How many carbon dioxide molecules are produced when two molecule of pyruvic acid is fed in Kreb's cycle?
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Solution
The correct option is D 6
From glycolysis of one glucose molecule, 2 pyruvate molecules are produced. Each puruvate produces acetyl CoA molecule and releases carbon dioxide. Also, Kreb's cycle produces 2 carbon dioxide molecules during formation of alpha-ketoglutaric acid and succinic acid respectively. Hence, total 3 carbon dioxide molecules are produced from pyruvate by Kreb's cycle. So, two pyruvate will produce two cycle which will produce 6 carbon dioxide.Thus, the correct answer is '3.'
From glycolysis of one glucose molecule, 2 pyruvate molecules are produced. Each puruvate produces acetyl CoA molecule and releases carbon dioxide. Also, Kreb's cycle produces 2 carbon dioxide molecules during formation of alpha-ketoglutaric acid and succinic acid respectively. Hence, total 3 carbon dioxide molecules are produced from pyruvate by Kreb's cycle. So, two pyruvate will produce two cycle which will produce 6 carbon dioxide.
Thus, the correct answer is '3.'
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