<prompt> Which of the following is physiological uncoupler?Thermogenin2, 4 nitrophenol2, 4 DinitrophanalOligomycin  <response>: Physiological uncouplers i. Thyroxine, in high doses ii. Thermogenin in brown adipose tissueRef: DM Vasudevan Textbook of Medical Biochemistry, 6th edition, page no: 234 