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Question

How many oxygen molecules are required for the oxidation of all the reduced coenzymes produced due to oxidation of one glucose molecule?

A
12
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B
24
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C
10
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D
6
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Solution

The correct option is D 6
In aerobic respiration complete oxidation of one glucose molecule yields 10 NADH and 2 FADH2 molecules. Each coenzyme uses one oxygen atom during its oxidation. Hence 6O2 are required to oxidise 12 reduced coenzymes.

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