Question

The following are the steps of chemiosmotic ATP synthesis in the light reaction. Arrange them in correct order of their occurrence:
(A) H+ diffuse through ATP synthetase and it makes ATP.
(B) Electrons from PS-II pass along electron transport chain
(C) H+ concentration gradient generates across the membrane
(D) Light excites electrons in PS-I

• A. (A), (B), (C), (D)
• B. (D), (B), (C), (A)
• C. (B), (A), (D), (C)
• D. (C), (B), (D), (A)

Hint:

Understanding the sequence of light reactions is fundamental for comprehending how plants convert light energy into chemical energy.

Answer 1

The Correct Option is B

The correct sequence is light excitation in PS-I, electron transport from PS-II, generation of a proton gradient, and ATP synthesis by ATP synthase.