<prompt> CO acts by inhibiting which component of respiratory chain -Cytochrome bCytochrome C oxidaseNADH CoQ reductaseOxidative phosphorylation  <response>: Ans. is b i.e., Cytochrome C oxidase Inhibitors of Electron transport chain Respiratory chaino Complex IBarbiturates amobarbital, piercidin A. rotenone, chlorpromazine. guanithidine.o Complex IICarboxin. TTFA, malonate.o Complex IIIDimercaprol, BAL, actinomycin A, Naphthvloquinone.o Complex IV cytochrome c oxidase :- Carbon monoxide CO-, cyanide CN-, H2S. azide N3- 