The plasma membrane separates the inside of the cell from its outside environment.
Both prokaryotic and eukaryotic cells have a plasma membrane, a double layer of lipids that separates the cell interior from the outside environment. The membrane is a delicate, two-layered structure of lipids and proteins, and it controls what can enter and exit the cell.
- Prokaryotic and eukaryotic cells both have a plasma membrane, which acts as a barrier between the cell’s interior and the outside environment.
- plasma membrane: the semipermeable barrier that surrounds the cytoplasm (inside contents) of a cell