Proteins perform the following functions in a cell:
– structural (are part of the cellular structures);
– enzymatic (accelerate chemical reactions in cells);
– hormonal (hormones regulate and coordinate metabolism in different cells of the body, some of them are proteins, for example, insulin and glucagon);
– receptor (this function consists in the selective binding of hormones, biologically active substances and mediators on the surface of membranes or inside cells);
– transport (proteins carry substances in the blood, for example, hemoglobin (oxygen transport), proteins transport cations of calcium, magnesium, iron, copper and other ions in the blood.
– contractile function (actin, myosin);
– protective (blood immunoglobulins prevent the infectious process and maintain the body’s stability).
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.