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Question

Which one of the following is incorrect statement for mitochondrial ETC and oxidative phosphorylation?

A
Enzyme complex I accepts electrons and H+ from NADH and FADH2
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B
Passage of protons through the channel coupled to the catalytic site of the F1 for ATP production
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C
Cytochrome-c is a mobile protein attached to the outer surface of inner membrane
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D
6H+ passes through F0 from intermembrane space to the matrix down the electrochemical proton gradient to produce 3ATP
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Solution

The correct option is A Enzyme complex I accepts electrons and H+ from NADH and FADH2
There are four protein complexes (labelled complex l-IV) in the electron transport chain, which are involved in moving electrons from NADH and FADH2 to molecular oxygen. Complex I accepts electrons and H+ from NADH while complex II accepts from FADH2.

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