Question

Describe with a diagram the fluid mosaic organisation of the plasma membrane.

Answer 1

Singer and Nicolson proposed the fluid mosaic model for describing the structure of a cell membrane. According to this model, the cell membrane is made up of a lipid bilayer and proteins. These proteins are of two types - intrinsic and extrinsic proteins. The lipid bilayer forms the highly viscous fluid and these two types of proteins are arranged in it in mosaic manner.
The extrinsic proteins are present superficially while the intrinsic proteins are embedded in the lipid bilayer.