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.

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(i) and (ii) only

(ii) and (iii) only

(i) and (iii) only

(i), (ii) and (iii)

answer is D.

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Detailed Solution

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 F₁component 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.

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