Home Biology Photosynthesis in Higher Plants Skill Builder The following ( P through U ) are the main s…
Biology Photosynthesis in Higher Plants Skill Builder Single Correct MCQ
Published on: August 14, 2026

The following ( P through U ) are the main steps of chemosynthetic ATP synthesis in the light reaction. Which answer places them in correct order?

P. concentration gradient generates
Q. diffuses through ATP synthetases

R. Carriers use energy from electrons to move across the membrane
S. Electrons from PS II pass along electron transport chain
T. Light excites electrons in PSII
U. Energy of flow is used by ATP synthase to make ATP

A
B
C
D

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The main steps of chemosynthetic ATP synthesis in the light reaction are as follows:
Light excites electrons in PSII Electrons from PS II pass along electron transport chain Carriers use energy from electrons to move across the membrane concentration gradient generates diffuses through ATP synthase Energy of flow is used by ATP synthase to make ATP.

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