The cell membrane, also known as the plasma membrane, plays a crucial role in various cellular functions in addition to controlling the movement of substances in and out of the cell. Firstly, it acts as a protective barrier, shielding the internal components of the cell from the external environment. It helps maintain the integrity and shape of the cell by providing support and preventing its collapse. The cell membrane is also involved in cell signaling and communication. It contains specialized proteins and receptors that allow cells to interact with and respond to their environment, sending and receiving signals. Furthermore, the cell membrane facilitates cell adhesion, allowing cells to stick together and form tissues and organs. Lastly, the membrane is responsible for regulating the transport of molecules within the cell, ensuring that essential substances are efficiently distributed to different organelles.
