Cell membrane

1. Phospholid bilayer-this is made up two layers of phospholipid molecules , their water soluble(hydrophyllic) head form the surface and the interior of membrane, and the other insouluble (hydrophobic) talis face each other.

2.Hydrophyllic layer-form the head and are soluble in water , form the layer and transports materials soluble in water.

3.Hydrophobic layer-forms the tails and insoluble in water , forms the layers and transports materials insoluble in water.

4. Fibrous protein-they serve as receptors for the cell and span the whole cell membrane.

5.Phospholipid-they make the framework of the cell memebrane and help to move the particles in and out.

6.Cholestrol-only in animal cell, they make the cell impermeable to water soluble substances and also stabalize the membrane.

7.Pore protien-allows lipid insoluble water to pass through.

8.Channel protein-these are intergal proteins that selectively transport ions in the cell.

9.Glycoprotin-these have carbohydrates and are peripherical( in the surface) globular proteins, that identify the cell.