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Question

Number of ATP produced from one pyurvic acid during conversation to acetyl Co-A

A
6
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B
3
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C
12
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D
15
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Solution

The correct option is C 3
During respiration, the pyruvic acid is converted into acetyl-CoA by the enzyme pyruvate dehydrogenase. This enzyme carries oxidative decarboxylation of one molecule of pyruvic acid to produce one molecule of acetyl- CoA releasing one molecule of carbon dioxide. This reaction also helps in producing one molecule of reduced NADH in the process. One molecule of reduced NADH is equivalent to 3 molecules of ATP, which are produced by oxidation of reduced NADH in the respiratory electron transport chain.
Thus, the correct answer is option B.

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