<prompt> Physiological uncoupler among the following is2,4 dinitrophenolThermogeninOligomycinAtractyloside  <response>: Thermogenin or the uncoupling protein is a physiological uncoupler found in brown adipose tissue that functions to generate body heat, paicularly for the newborn and during hibernation in animals. Reference: Harper; 30th edition; Page no: 13 