In the light reactions of photosynthesis, A) sugars are synthesized from CO₂ and water. B) H₂O is converted to O₂ and NADP⁺ is reduced to NADPH. C) oxidative phosphorylation produces ATP. D) All of the above

Question

Quizplus · Accepted Answer

The light reactions of photosynthesis involve the conversion of light energy into chemical energy (in the form of ATP) and the reduction of NADP+ to NADPH, using water as an electron donor. This process is mediated by photosystems I and II and other associated proteins and cofactors. Sugars are not synthesized in the light reactions, and oxidative phosphorylation is a process that occurs in cellular respiration, not photosynthesis.

In the Light Reactions of Photosynthesis