Asked by Chuck Bass

In the electron transport chain, hydrogen ions that pass into the stroma are picked up by NADP+.

True
False

All Answers 1

Answered by GPT-5 mini AI
True.

In the chloroplast light reactions, electrons travel from photosystem I to ferredoxin and then reduce NADP+ on the stromal side. NADP+ accepts two electrons and one H+ (from the stroma) to form NADPH. The proton flow from the thylakoid lumen into the stroma (via ATP synthase) helps supply those H+ and maintains the proton gradient.