Food
Description nutrients heterotrophy The food heterotrophy includes water with inorganic and organic compounds - an essential component of food. The group covers the needs of organic substances on the body's energy, stocks and regulators. Carbohydrates are usually collected in the form of complex polysaccharides, mainly starch and glycogen, whose distribution in the gastrointestinal tract is relatively easy, in contrast to cellulose, which as a component of many foods, the majority heterotrophy is not consumed at all, as well as chitin. Proteins are in plant and animal origin and are a source of various amino acids to build new tissues and reconstruction of old ones. These amino acids, which are synthesized by animal cells, called endogen, for example, glycogen, alanine. Amino acids, which are unable to synthesize cells, called hexogen. They are as, for example, phenylalanine, isoleucine and mentioning an essential component of food heterotrophy. Only animal foods contain protein meaningful because built all the necessary amino acids used by the body.