In the electron transport chain,which cytochr | vedclass

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(C) The electron transport chain $(ETC)$ is located in the inner mitochondrial membrane.During the final step of the $ETC$,the enzyme complex $IV$ (al

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Cytochrome-$a_3$

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(C) The electron transport chain $(ETC)$ is located in the inner mitochondrial membrane.During the final step of the $ETC$,the enzyme complex $IV$ (also known as cytochrome $c$ oxidase) is responsible for the transfer of electrons.This complex contains cytochromes $a$ and $a_3$,along with two copper centers.Cytochrome $a_3$ is the specific component that donates electrons directly to molecular oxygen $(O_2)$,which then combines with protons $(H^+)$ to form water $(H_2O)$.

In the electron transport chain,which cytochrome donates electrons to $O_2$ during the final oxidation step?

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