Study the following statements regarding the chemiosmotic hypothesis in mitochondria and select the CORRECT ones.
(i) F₁ headpiece contains the site for the synthesis of ATP from ADP + Pi.
(ii) F₀ part forms the channel through which protons crosses the inner membrane.
(iii) For each ATP produced, 2H⁺ pass through F₀ from the intermembrane space to the matrix down the electrochemical proton gradient.
 

detailed solution

Correct option is D

The F1 headpiece is a peripheral membrane protein complex and contains the site for synthesis of ATP from ADP and inorganic phosphate. F0 is an integral membrane protein complex that forms the channel through which protons cross the inner membrane. The passage of protons through the channel is coupled to the catalytic site of the F1 component for the production of ATP. For each ATP produced, 2H+ passes through F0 from the intermembrane space to the matrix down the electrochemical proton gradient.