What is plasma membrane

Answer 1

The plasma membrane, also known as the phospholipid bilayer, is one of the four common features of all cells- eukaryotic and prokaryotic alike. This membrane is an outer layer, or barrier, that decides what can come into the cell (or an organelle!) and what can leave it. Because of this trait, it is known as selectively permeable. For example, O2 can freely travel across the membrane, while macromolecules and ions cannot. Both the production of the membrane and the performance of all of its parts are crucial to the survival of the cell.

Answer 2

Hi Susan! A plasma membrane is a part of a cell. It is sometimes also called the cell membrane. In animal cells, it is the piece of the cell that separates it from the outside world. In plant and bacteria cells, the plasma membrane is surrounded by the cell wall. A cell membrane's job is to control what can come in and out of the cell. Because only certain things can go through it, it is called "semipermeable." If there's anything specific you need to know about plasma membranes, please let me know!