Physiological uncoupler is-: (A) Thermogonin, (B) 2, 4 nitrophenol, (C) 2, 4Dinitrophenol, (D) Oligomycin
Answer is A. Ans. is 'a' i.e., Thermogenin o Amongst the given options, a, b and c are uncouplers.o However, only thermogenin, among these three is a natural (physiological) uncoupler.i) Natural:- Thermogenin, thyroxineii) Synthetic:- 2,4-dinitrophenol (2,4-DNP), 2,4-dinitrocresol (2,4-DNC), and CCCP (chlorocarbonylcyanidephenyl hydrazone).