Cytochrome oxidase in oxidative phosphorylation is inhibited by: (A) CO, (B) H2S, (C) Rotenone, (D) Amobarbital
Answer is A. Cyanide and carbon monoxide kill because they disrupt the physiologic function of the heme proteins cytochrome oxidase and hemoglobin,respectively.Ref: Harper&;s Biochemistry; 30th edition; Chapter 6 Proteins: Myoglobin & Hemoglobin