STANDARDZoology-Respiration in Plants

STANDARD Zoology Chemiosmotic Hypothesis MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on

A

Proton gradient

B

Accumulation of K ions

C

Accumulation of Na ions

D

Membrane potential

Correct Answer

Option A

Detailed Explanation

Peter Mitchell (1961) proposed the chemiosmotic mechanism of ATP synthesis which states that ATP synthesis occurs due to proton flow H⁺ through a membrane due to proton gradient the protons move to the matrix while passing through proton channel of F₀-F₁ ATPase. This proton gradient activates the enzyme ATP synthases that control the formation of ATP from ADP.

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