Abstract
Our body's resistance to unfavorable environmental conditions is explained by its ability to make timely reserves of nutrients. One of the important "reserve" substances of the body is glycogen - a polysaccharide formed from glucose residues. Provided that a person receives the necessary amount of carbohydrates every day, the glucose, which is in the form of cell glycogen, can be left in reserve. If a person experiences energy hunger, then glycogen is activated, with its subsequent transformation into glucose.
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