<prompt> Mechanism of cyanide poisoning is by inhibiting -DNA synthesisCytochrome oxidaseProtein breakdownProtein synthesis  <response>: Ans. is b i.e., Cytochrome oxidase o Cyanide inhibits cytochrome oxidase for oxygen utilisation in cells,o Death is due to cytotoxic histotoxic anoxia,o It is associated with a characteristic smell of bitter almonds. 