What is the funcation of a cell membrane?

Answer 1

1) to hold the cell together. 2) To separate the cell from everything else.

Answer 2

The cell membrane serves as a protective barrier that controls the movement of substances in and out of the cell. It also helps maintain the cell's shape and internal environment by allowing necessary molecules to enter and waste products to exit. Additionally, the cell membrane contains receptor proteins that allow cells to communicate with each other and respond to their environment.