CO is a known inhibitor of the electron transport chain. Which complex of electron transport chain is inhibited by CO?

Q. A coal mine worker was brought in an unconscious state to the emergency room after a blast in the mine. His blood Carboxyhemoglobin level was high and he was diagnosed with CO poisoning. CO is a known inhibitor of the electron transport chain. Which complex of electron transport chain is inhibited by CO?

Q. A coal mine worker was brought in an unconscious state to the emergency room after a blast in the mine. His blood Carboxyhemoglobin level was high and he was diagnosed with CO poisoning. CO is a known inhibitor of the electron transport chain. Which complex of electron transport chain is inhibited by CO?

A.            Complex I

B.            Complex II

C.            Complex III

D.            Complex IV

Answer: Complex IV

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