Home » Besides carbohydrates, a major source of energy in our food is constituted by Nutrition MCQs Besides carbohydrates, a major source of energy in our food is constituted by May 5, 2022 97 Views Q. Besides carbohydrates, a major source of energy in our food is constituted byA. ProteinsB. FatsC. MineralsD. VitaminsAnswer: Fats