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

Options

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

Answer

B

Explanation

Proton gradient or proton motive force required for phosphorylation of synthesis of ATP from ADP with the use of energy of oxidation-reduction, therefore, it is called oxidative phosphorylation.