"Fluid mosaic model of cell membrane" was given by singer and nicolson. Explain the structure with the help of a diagram.

Dear student,                                                                                                                                                                   
Please find below the solution to the asked query 

The structure of plasma membrane was proposed by Singer and Nicolson in 1972. It is widely accepted as fluid mosaic model. According to this model-

  • The cell membrane is composed of a lipid bilayer, with a polar head towards the outer side, and hydrophobic tails towards the inner side. So, the non-polar,  hydrophobic tail is protected from the aqueous environment.
  • Proteins and carbohydrates are also present in the membrane.
  • Membrane proteins can be integral (lying buried in the membrane) or peripheral (lying on the surface of the membrane).
  • The fluid mosaic model shows the quasi-fluid nature of lipids enables lateral movement of proteins within the bilayer.
  • Fluidity is the measure of the ability of the membrane to allow movement within itself.
  • Fluid nature of the membrane is important for cell division, cell growth, the formation of intercellular junctions, secretion, and endocytosis.

Hope this information will clear your doubts about the topic.   
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.         


  • 0
What are you looking for?