This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Chain, Subject name: Biochemistry
[{'content': 'Complex I of ETC is inhibited by - \nSelect and explain. \nA. Amobarbital, B. Cyanide, C. 0, D. H2S', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Amobarbital Inhibitors of Electron transport chain (Respiratory chain)o Complex I:- Barbiturates (amobarbital), piercidin A, rotenone, chlorpromazine, guanithidine.o Complex II:- Carboxin, TTFA, malonate.o Complex III :- Dimercaprol, BAL, actinomycin A, Naphthyloquinone.o Complex IV :-(cytochrome c oxidase) Carbon monoxide (CO), cyanide (CN-), H2S, azide (N3 )", 'role': 'assistant'}]