Mechanism of action of cyanide poisoning: September 2010
Ans. D: Blocks Cytochrome enzyme P- 450 Cyanide poisoning occurs when a living organism is exposed to a compound that produces cyanide ions (CN-) when dissolved in water. Common poisonous cyanide compounds include hydrogen cyanide gas and the crystalline solids potassium cyanide and sodium cyanide. The cyanide ion halts cellular respiration by inhibiting an enzyme in mitochondria called cytochrome c oxidase.
Inhibits protein breakdown
Inhibits DNA synthesis
Inhibits protein syntheisi
Blocks Cytochrome enzyme P- 450