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Question

How many molecules of reduced coenzymes are produced inside mitochondria during complete oxidation of one glucose?

A
Five - 4NADH + 1 FADH2
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B
Twelve -10 NADH + 2 FADH2
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C
Ten -8 NADH + 2 FADH2
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D
Four -3 NADH + 1 FADH2
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Solution

The correct option is C Ten -8 NADH + 2 FADH2
1 molecule of glucose yields 2 NADH (reduced nicotinamide adenine dinucleotide), 2 ATP and 2 pyruvate while undergoing glycolysis (breakdown of glucose). The 2 molecules of pyruvate are completely degraded in Krebs cycle to form 2 ATP, 8 NADH (reduced nicotinamide adenine dinucleotide) and 2 FADH2.

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