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(B) Cytochrome oxidase (Complex $IV$) is the final enzyme in the electron transport chain $(ETC)$ that transfers electrons to oxygen,reducing it to wa

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Azides and cyanides

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(B) Cytochrome oxidase (Complex $IV$) is the final enzyme in the electron transport chain $(ETC)$ that transfers electrons to oxygen,reducing it to water.Cyanide $(CN^-)$ and azides $(N_3^-)$ act as potent inhibitors of cytochrome oxidase.They bind to the iron atom in the heme group of the enzyme,preventing the transfer of electrons to oxygen,which effectively halts cellular respiration and $ATP$ production.

The enzyme cytochrome oxidase is inhibited by which of the following?

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