Ans.
Carbohydrates are biomolecules, made up of carbon, hydrogen, and oxygen molecules. The carbohydrates act as main energy sources of the body, such as glucose. Thus, 'carbohydrates provide a quick energy transfer for cells and tissues.'
Proteins are made up of amino acid molecules and are present in body as hormones (insulin and glucagon), enzymes, growth factors, and building blocks of muscles, bones, skin, hairs, and blood. Thus, 'proteins form tissue, hormones, and growth factors.'
Fats are lipid derivatives, such as phospholipids that form plasma membrane of all living organisms along with proteins. Thus, 'lipids form structural component of cell membrane.'
Vitamins are small organic molecules, require by body to perform normal functions. These molecules prevent formation of harmful free radicals in the cells and tissues. Thus, 'vitamins act as antioxidants.'
