Biochemistry

Consequently, ATP is a carrier of energy and serves as a link uniting processes that occur with the release and consumption of energy. + energy ATP^=*- ADP + H 3 PO 4 . -energy The pathway for the formation of ATP from ADP and inorganic phosphate due to the energy released during the oxidation of organic substances is called oxidative phosphorylation. With the transport of electrons and protons (separately or together), the amount of potential energy contained in food substances or oxidized structural components of cells decreases, it passes into free energy and is stored in ATP macroergic bonds. There are three sites in the respiratory chain where free energy appears, sufficient for ATP synthesis. This is a segment of the respiratory chain between NAD and FAD, between cytochromes В and C, A and A 3 . ADF+F. = ATF ADF+F e =ATF ADF+F ( = ATF Substrate >NAD FAD A, В A Total, in the process of electron pair transfer, three ATP molecules are obtained. The process of release and accumulation of energy in the body can conditionally be divided into four stages. At the preparatory stage in the gastrointestinal tract, hydrolysis of high molecular weight food compounds - polymers and absorption of the formed monomers takes place. So, proteins are broken down to amino acids, fats - to glycerol and higher fatty acids, carbohydrates - to monosaccharides. At this stage, almost no energy is generated (only about 0.1%). 112