plasmalemmalla

Plasmalemma is the term used to describe the plasma membrane of a cell. It is a biological membrane that separates the interior of all cells from the outside environment. The plasmalemma is selectively permeable, meaning it controls the passage of substances into and out of the cell. It is composed of a phospholipid bilayer with embedded proteins, which perform various functions such as transport, signaling, and cell adhesion. The fluid mosaic model is the prevailing theory describing the structure and function of the plasmalemma, envisioning it as a dynamic structure where proteins can move laterally within the lipid bilayer. This membrane plays a crucial role in maintaining cell homeostasis, cell-to-cell communication, and responding to external stimuli. In plant cells, the plasmalemma is located just inside the cell wall.