Plastic exchange is a set of reactions of biochemical synthesis. As a result of these reactions, the substances necessary for it are formed from the compounds entering the cell. The main processes of plastic metabolism are the biosynthesis of proteins, carbohydrates, lipids, nucleic acids, as well as photosynthesis and chemosynthesis. And since organic substances are synthesized during photosynthesis, this process is referred to as plastic exchange.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.