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Question

Two pairs of electrons passing from NADH molecules to oxygen generate

A
2 ATP
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B
3 ATP
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C
4 ATP
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D
6 ATP
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Solution

The correct option is B 6 ATP
Through ETS, passage of electrons are responsible for the maintenance of proton gradient which in turn takes part in generation of ATP from the ATP synthase. Passage of two pairs of electrons from NADH to oxygen will pump out 6 pairs of protons from the inner chamber of mitochondria. The back flow of 6 pairs of protons will produce 6 ATP.
So, the correct answer is '6ATP'.

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