Cell Membrane

Cell membrane

The cell membrane is a thin, flexible, semipermeable layer that surrounds the cell, regulating what enters and exits. It serves as a protective barrier, allowing essential materials—such as oxygen, nutrients, and water, to pass through while preventing harmful substances from entering. Because it is semiperme...

What would happen if a cell dissolved in water, just like salt does? Thankfully, it doesn’t because it has a cell or plasma membrane that prevents it from dissolving in its watery environment.

This membrane controls the movement of substances in and out of the cell.

It is made of tiny phospholipid molecules, each with a ‘water-lovin...