Which of these are respiratory poisons or inhibitor of ETC?

Options

A. Cyanides
B. Antimycin A
C. Carbon monoxide
D. All of these

Answer

d

Explanation

Site-specific inhibitors of electrons transport prevent the passage of electrons by binding to a component of the chain, blocking the oxidation/reduction reaction.
Antimycin A, an antibiotic, blocks electron transpart at the level of the `CoQH_(2)`-cytochrome c-reductase (Complex III).
Cyanide azide and CO bind with cytochrome oxidase complex and inhibit the terminal of electrons to oxygen.