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← ScienceWhich outcome is favored because a high concentration gradient of hydrogen ions exists across a thylakoid membrane?
A)Increased ATP synthase activity✓
B)Reduced photosystem II efficiency
C)Decreased cytochrome complex stability
D)Enhanced non-cyclic electron flow
💡 Explanation
Increased ATP synthase activity results because proton-motive force, which stems from chemiosmosis, harnesses the electrochemical gradient (high concentration difference) across the membrane; therefore, ATP is efficiently generated, rather than alternatives inefficiently using fewer ions.
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