Biology · Biochemistry and Cell Respiration

Which statement best describes the mechanism of cyanide toxicity in cellular respiration?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Cyanide inhibits cytochrome c oxidase, blocking electron transfer to oxygen and stopping ATP production✓
2Cyanide irreversibly stimulates the enzymes of the citric acid cycle
3Cyanide acts as an alternative substrate for ATP synthase
4Cyanide directly accelerates glucose breakdown in glycolysis

Correct answer

Cyanide inhibits cytochrome c oxidase, blocking electron transfer to oxygen and stopping ATP production

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