Start learning →

In the Z-scheme of photosynthesis, electrons flow:

AFrom PSI to water (downhill)
BFrom NADPH to PSII
CJust within PSI only
DFrom water → PSII → PSI → NADPH
Answer & Solution
Correct answer: D. From water → PSII → PSI → NADPH
NON-CYCLIC e⁻ flow (Z-scheme): water → PSII (P680) → ETC → PSI (P700) → NADPH. Generates ATP + NADPH + O2. CYCLIC flow uses only PSI, generates ATP only.
Practise this question with Quill — AP Intermediate 1st Year →

Keep practising Photosynthesis in Higher Plants

Browse all Photosynthesis in Higher Plants questions for AP Intermediate 1st Year, or explore more Biology topics.

Start a Photosynthesis in Higher Plants lesson →