NADP+ gets its electrons to become NADPH in the light-dependent reactions of photosynthesis from
A) ATP synthase
B) the flow of hydrogen ions
C) electron transfer chains
D) oxygen gas
E) glucose

Question

Quizplus · Accepted Answer

In the light-dependent reactions of photosynthesis, NADP+ accepts two electrons and one hydrogen ion from the electron transfer chains located in the thylakoid membrane. This reduces NADP+ to NADPH, which is used in the light-independent reactions (Calvin cycle) to reduce carbon dioxide to glucose. ATP synthase is involved in the production of ATP, but not NADPH. Oxygen gas is a product of photosynthesis, not a donor of electrons. Glucose is produced in the light-independent reactions and does not donate electrons to NADP+.

NADP+ Gets Its Electrons to Become NADPH in the Light-Dependent