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NEET2023BotanyPhotosynthesis in Higher PlantsActual

Which of the following combinations is required for chemiosmosis?

Options

  1. Aproton pump, electron gradient, NADP synthase
  2. Bmembrane, proton pump, proton gradient, ATP synthase
  3. Cmembrane, proton pump, proton gradient, NADP synthase
  4. Dproton pump, electron gradient, ATP synthase

Correct answer

B. membrane, proton pump, proton gradient, ATP synthase

Step-by-step solution

ATP synthesis according to chemiosmosis hypothesis takes place in both chloroplasts (photophosphorylation) and mitochondria (oxidative phosphorylation). Both these processes need the involvement of: A membrane (thylakoid membrane or mitochondrial membrane, respectively). Proton pumps to maintain the pH. Proton gradient to move the proton across the membrane. ATP synthase enzyme which is present in F 0 -F 1 particles in mitochondria or CF 0 -CF 1 particles in plastids.

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