In the noncyclic pathway, A)there is a one-way flow of electrons from photosystem I to photosystem II. B)ATP alone is produced. C)hydrogen ions are pumped into the thylakoid compartment. D)NADP⁺ accepts only H⁺. E)H⁺accumulates in the stroma.

Question

Quizplus · Accepted Answer

In the noncyclic pathway, hydrogen ions are pumped into the thylakoid compartment to form a proton gradient that drives ATP synthesis. There is no one-way flow of electrons; both photosystem I and photosystem II are involved in the noncyclic pathway. NADP+ is reduced to NADPH in the noncyclic pathway, not H⁺. H⁺ does not accumulate in the stroma in the noncyclic pathway.

In the Noncyclic Pathway