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
• B. ADP is pumped out of the matrix into the intermembrane space
• C. A proton gradient forms across the inner membrane
• D. There is a change in the permeability of the inner mitochondrial membrane towards adenosine diphosphate (ADP)

Answer 1

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