<prompt> All are involved in energy metabolism except ?Vitamin B,Vitamin B3Vitamin B7Vitamin B12  <response>: Ans. is d i.e., Vitamin B12 The active forms of five of the B Vitamins paicipate in the release of energy from carbohydrate, fat and proteins. These five vitamins of Vitamin B group which are involved in energy metabolism are :-Thiamin Vitamin BIRiboflavin Vitamin B2Niacin Vitamin B3Pantothenic acid Vitamin B5 Biotin Vitamin B7 or Vitamin H 