The structure and function of the cell membrane.

Each cell is surrounded by a membrane. It can be single or double layer. The membrane consists of many proteins and phospholipids, which form a strong framework with different pores and channels. The membrane protects the cell from various influences and separates the contents of the cell from the environment. Also, through the channels, the exchange of useful substances and the release of waste to the outside take place. There are also many receptors and markers on the membrane that are involved in various cell interactions. In addition, various energy processes take place in the membrane.