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Complex IV

How many oxyg...

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 $F A D H_{2}$ molecules. Each coenzyme uses one oxygen atom during its oxidation. Hence $6 O_{2}$ are required to oxidise 12 reduced coenzymes.

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