Question

Cyanide (CN-) poisoning stops cellular respiration by inhibiting the actions of cytochrome c oxidase enzymes in the mitochondria. Specifically, cyanide blocks complex IV of the electron transport chain. What does that suggest about oxygen’s role as an electron acceptor?

Answer 1

The electron chain function occurs inside the mitochondria. This contains the respiratory chain, where electrons transfer from the NAHD to an electron carries chain.