Barbiturates act on which step of mitochondrial respiratory chain?
1. Complex I to Co-Q specific inhibitorsAlkylguanides (guanethidine), hypotensive drugRotenone, insecticide and fish poisonBarbiturates (amobarbital), sedativeChlorpromazine, tranquilizerPiericidin, antibioticRef: DM Vasudevan Textbook of Medical Biochemistry, 6th edition, page no: 234