Explain the function of the cell membrane?

Answer 1

The plasma membrane separates the cell from its' surrounding environment and is arranged in a bilayer sheet of phospholipids.

It is a mosaic of molecules in a fluid. That is, the molecules are able to float around slowly (like islands in the sea). The cholesterol molecules are scattered among the phospholipids to allow the membrane to function properly at body temperature. Most of the bilayer is hydrophobic; therefore water

or water-soluble molecules do not pass through easily.

A cell controls what moves through the membrane by means of membrane proteins embedded in the

phospholipid bilayer. Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.

Answer 2

It act as the boundary of cell.It regulates the entry and exit of materials.It protects inner structures.

Answer 3

In passive molecules and other particles move to regions of lower concentration to cell membrane