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Balance Sheet of Krebs Cycle

In two turns ...

Question

In two turns of Krebs cycle, the number of NADH molecules produced is

A

Six

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B

Five

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C

Four

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D

Three

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Solution

The correct option is A Six
Kreb's cycle is the second phase of aerobic respiration during which acetyl CoA condenses with OAA to form citrate which undergoes oxidative decarboxylation forming 3 molecules of NADH $_{2}$ and one molecule FADH $_{2}$ . Since glycolysis produces two pyruvates and hence two acetyl coA from one molecule of glucose, net yield of NADH $_{2}$ from Krebs cycle for one glucose is 6. So, the correct answer is option A.

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Balance Sheet of Krebs Cycle

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