Question

Why light is required for light dependent reactions?

(a) It splits ATP molecules which generates the energy necessary to power the light independent reactions

(b) It is the source for electrons

(c) It splits the water molecules

(d) It energizes electrons in the reaction center

This question was posed to me in an interview.

I'd like to ask this question from ATP Synthesis by Photophosphorylation topic in section Oxidative Phosphorylation and Photophosphorylation of Biochemistry

Answer 1

Correct choice is (d) It energizes electrons in the reaction center

To explain I would say: Light energizes electrons in the reaction center, so it is required for light dependent reactions.