Plasma Membrane of a cell consists of a bilayer of phospholipids with many different associated integral and peripheral proteins and glycoproteins.

The cell’s plasma membrane, or plasmalemma, is only 7 – 10 nm thick, below the resolution of the light microscope.

• In very high magnification TEM pictures, the structure of the plasma membrane can be partially seen if the proteins associated with it internally and externally are abundant.
• A thick external coat of glycoproteins on the outside of the plasma membrane is called a glycocalyx.

In the fluid mosaic model for membrane structure, what is “fluid” and why?

Let's now take a look at the nucleus