Identify the correct statements regarding the chemiosmotic hypothesis.
A. Splitting of the water molecule takes place on the inner side of the membrane.
B. Protons accumulate within the lumen of the thylakoid.
C. Primary acceptor of electron transfers the electrons to an electron carrier.
D. NADP reductase enzyme is located on the stroma side of the membrane.
E. Protons increase in number in stroma.
Choose the correct answer from the options given below.

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B, C and D

B, C and E

A, B and D

A, B and E

answer is B.

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Detailed Solution

A, B and D are correct but C and E are incorrect.

A. The splitting of water occurs in the thylakoid lumen during the light dependent reactions of photosynthesis.

B. According to the chemiosmotic hypothesis, during the light-dependent reactions of photosynthesis, protons (H⁺) are pumped into the thylakoid lumen, creating a proton gradient.

C. Primary acceptor of electron transfers the electrons to an H carrier.

D. NADP reductase is an enzyme involved in the fi nal step of the light-dependent reactions, where it catalyzes the reduction of NADP⁺ to NADPH. NADP reductase enzyme is located on the stroma side of the membrane.

E. Protons decrease in number in stroma.

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