The energy released as electrons pass along the electron transport chain is used directly to
- A. split water molecules
- B. pump hydrogen ions across the inner mitochondrial membrane
- C. reduce carbon dioxide
- D. phosphorylate glucose
Explanation
Three carrier complexes use the energy of falling electrons to pump H+ from matrix to intermembrane space, building the gradient that ATP synthase later harnesses. The electrons themselves finally reduce oxygen to water.
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