Give the biochemical composition of plasma membrane. How are lipid molecules arranged in the membrane ?

Explanation

Plasma membrane is made up of lipids that are arranged in fila. Later biochemical investigations clearly revealed that the cell membrane also posses protein and Carbohydrate. The lipids are arranged with in the membrane, with the polar (hydrophilic) head towards the outer sides and the tail (hydrophobic) towards the inner part. With in the lipids, proteins are classified into integral or peripheral proteins.
An improved model Nicholson (1972) widely accepted as "fluid Mosaic Model", According to this, the quasi fluid nature of lipid enables lateral movement of proteins within the overall bilayer.