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Question

The chemiosmotic coupling hypothesis of oxidative phosphorylation proposes that adenosine triophosphate (ATP) is formed because _______.

A
High energy bonds are formed in mitochondrial proteins
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B
ADP is pumped out of the matrix into the intermembrane space
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C
A proton gradient forms across the inner membrane
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D
There is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate (ADP)
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Solution

The correct option is C A proton gradient forms across the inner membrane

As per chemiosmotic hypothesis ATP synthetase becomes active in ATP formation only where there is a protein gradient having a higher concentration of H+ or protons on the inner side as composed to the outer side


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