Irreversible inhibition of cytochrome oxidase is caused by hydrogen cyanide. Which of the following would be expected if this compound is added to a preparation of intact mitochondria?

Question

Irreversible inhibition of cytochrome oxidase is caused by hydrogen cyanide. Which of the following would be expected if this compound is added to a preparation of intact mitochondria? (A) Inactivation of ATP synthetase (B) No change in ATP synthesis (C) Rise in electrochemical gradient (D) Fall in hydrogenation of molecular oxygen

Tardigrade Admin · Accepted Answer

Correct answer is (d) Fall in hydrogenation of molecular oxygen

Q. Irreversible inhibition of cytochrome oxidase is caused by hydrogen cyanide. Which of the following would be expected if this compound is added to a preparation of intact mitochondria?

Inactivation of ATP synthetase

No change in ATP synthesis

Rise in electrochemical gradient

Fall in hydrogenation of molecular oxygen

Correct answer is (d) Fall in hydrogenation of molecular oxygen