Start learning →

Cyclic photophosphorylation differs from non-cyclic in that it

Auses only PS I; makes ATP, no NADPH, no O₂
Buses only PS II and makes only NADPH
Cuses both photosystems but makes no ATP
Dproduces glucose directly
Answer & Solution
Correct answer: A. uses only PS I; makes ATP, no NADPH, no O₂
In cyclic photophosphorylation, electrons leave PS I, flow through the ETC, and return to PS I; only ATP is made. PS II is not involved, so water is NOT split and NO O₂ is released, and no NADPH. Non-cyclic makes both ATP and NADPH and releases O₂.
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 →