The cytochrome that passes electrons directly to oxygen is

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The cytochrome that passes electrons directly to oxygen is the cytochrome a/a₃ complex, also known as cytochrome oxidase. This complex is responsible for the final step of aerobic respiration, the reduction of oxygen to water. Cytochrome b and cytochrome c1 are involved in earlier steps of the electron transport chain and do not directly transfer electrons to oxygen. Cytochrome c transfers electrons between complexes in the electron transport chain but not directly to oxygen.

The Cytochrome That Passes Electrons Directly to Oxygen Is