Explain the structure and function of the cell membrane using the Fluid Mosaic Model.

The Fluid Mosaic Model describes the cell membrane as a dynamic structure composed of a phospholipid bilayer with embedded and associated proteins. The 'fluid' aspect refers to the constant movement of phospholipids and proteins within the membrane, while 'mosaic' refers to the patchwork of different proteins. Its primary function is to regulate the passage of substances into and out of the cell, maintain cell integrity, and facilitate cell communication.