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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