The cell membrane (the plasma membrane) surrounds the cytoplasm of the plant and animal cell. Cell packaging, separating its contents and the surrounding medium and preventing the spread of protoplasm outside

Location:
The cytoplasm surrounds the plant and animal cell.
Composition:
It is composed of two layers of phospholipids, interspersed with molecules of protein and linked to molecules of cholesterol.
the description:
Thin film.
Function:
- Envelopes the cell and separates the contents and the surrounding environment and thus prevents the spread of extracellular protoplasm.
- plays a key role in regulating the passage of substances to and from the cell.