Question

question 5 of 10
which protein complex absorbs the energy that is used to produce nadph?
a. hydrogen ion pump
b. atp synthase
c. photosystem i
d. photosystem ii

Explanation:

Photosystem I absorbs light energy. This energy is used in the light - dependent reactions of photosynthesis to reduce \(NADP^{+}\) to NADPH. Hydrogen ion pump (A) is involved in creating a proton gradient. ATP synthase (B) uses the proton gradient to produce ATP. Photosystem II (D) is mainly involved in splitting water and passing electrons to the electron - transport chain, not directly in the production of NADPH (although it is part of the overall electron flow that eventually leads to NADPH production, but the direct absorption for NADPH production is by Photosystem I).

Answer:

C. Photosystem I