AP Biologymediummcq1 pt
Which statement about chemiosmosis is true in both chloroplasts and mitochondria?
A.An H⁺ gradient drives ATP synthase
B.Both use oxygen as the final electron acceptor
C.Both produce NADPH
D.Both consume glucose
Explanation
Core Concept
Mitochondria and chloroplasts both use chemiosmosis: electron-transfer reactions establish an electrochemical proton gradient across a membrane, and ATP synthase uses proton flow down that gradient to make ATP. They differ not only in which compartments hold the gradient, but also in energy source and electron donors/acceptors. The shared AP-core principle is proton-motive-force-driven ATP synthesis.
Correct Answer
AAn H⁺ gradient drives ATP synthase
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