In the electron transport system, the energy used to synthesize ATP comes from the diffusion of ________ from the outer compartment of the mitochondria to the inner compartment. A) electrons B) NADH C) hydrogen ions D) FADH₂ E) pyruvate

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The energy used to synthesize ATP in the electron transport chain comes from the diffusion of hydrogen ions (protons) across the mitochondrial membrane, creating a proton gradient that drives ATP synthesis through ATP synthase.

In the Electron Transport System, the Energy Used to Synthesize