Question

Chemiosmotic coupling hypothesis of oxidative phosphorylation proposes ATP synthesis because of

• A. Proton gradient forms across inner membrane.
• B. Changed impermeability of inner mitochondrial membrane to ADP.
• C. High energy bonds are formed in mitochondrial proteins.
• D. ADP is pumped out of the matrix into intermembrane space.

Answer 1

The correct option is A Proton gradient forms across inner membrane.

The ATP produced during oxidative phosphorylation by which the electron flow from the electron carrier to the non-hydrogen carrier the H+ in the intermembranous space than in matrix. The protons flow back due to proton motive force by which the energy is liberated by activating ATPase present in F1 head to synthesize ATP.

So the correct option is 'Proton gradient forms across the inner membrane.'