Question

Following steps in random order are given below for photophosphorylation through chemiosmosis -
(I). $ATP$ synthase produces $ATP$ due to flow of $H^{+}$ from thylakoid lumen to stroma
(II). $NADP$ reductase, located on stroma side of membrane, obtains $e^{-}$ from $PSI$ and protons from stroma to form $NADP{H}_2$
(III). Cytochrome system transport electrons and pumps $H^{+}$ from stroma to thylakoid space
(IV). $PSII$ oxidises water
(V). Reaction centre of $PSII$ gets photoexcited having released electrons
The correct sequence is -

• A. I, II, II, IV, V
• B. V, IV, III, II, I
• C. I, III, II, IV, V
• D. III, V, IV, II, I

Answer 1

Answer: (B)

Correct answer is (b) V, IV, III, II, I