Heterotrophy
Features alien eatingAlien eating organisms are capable of their own synthesis of organic compounds only finished already produced by other organisms, carbon-rich energy. Food heterotrophy due to the often-large size, the complexity of chemical and antigenic properties may not be directly absorbed into the cells cytoplasm and integrated into the metabolic cycle of change. Often, it contains not the body substances such as body armor different animals, horns, and creations of skin epidermis, the woody plant cell walls. In the organic compounds, as a non-for the body, sometimes insoluble in water - cannot be assimilated by the cells heterotrophy. It can absorb, assimilate and carry only non-forming during the digestion of food, that is, monosaccharide's, fatty acids, glycerol, amino acids and the like. The distribution of food ingredients available to them and the separation of substances, which are ceasing no digestion, take place in special structures. Digestive cavities are permanent or recurring external environment in which the processes of digestion and absorption of food products of digestion.