If a drug that specifically prevented the interaction of cytochrome c with other proteins was added to respiring mitochondria in a test tube, what effects would be observed? A) ATP synthesis would immediately stop. B) Oxygen consumption would increase. C) Reduced cofactors (NADH/FADH₂) would accumulate. D) Coenzyme Q would become oxidized. E) Proton export from the matrix would increase.

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Quizplus · Accepted Answer

Cytochrome c is a key component of the electron transport chain. If its interaction with other proteins is prevented, electron transport is halted, leading to the accumulation of reduced cofactors like NADH and FADH2.

If a Drug That Specifically Prevented the Interaction of Cytochrome