The use of food by organisms is termed nutrition. Vitamins and minerals necessary for biochemical processes. There are three general categories of food: (1) Essential fiber which are non-digestible po...The use of food by organisms is termed nutrition. Vitamins and minerals necessary for biochemical processes. There are three general categories of food: (1) Essential fiber which are non-digestible polysaccharide material, essential for normal functioning of animal digestive systems (i.e. colon), (2) Energy-yielding nutrients which are protein, carbohydrate and lipid and (3) Micronutrients.
