Question

Explain the fluid mosaic model by singer and Nicolson .

Answer 1

Heyy Allysia !!
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 It is currently most  accepted modal of cell membrane which was proposed by Singer and Nicolson in 1972.
According to the Fluid Mosaic Model. Cell membranes have a quasifluid consistency complete covering sheath of protein is absent on either of its faces. Lipid Bilayers is However, continuous. It is made of phospholipid molecules(  some 100 types reported) with their polar hydrophilic heads  towards the two surfaces and non polar hydrophobic tails towards  the centre ,Other lipids are also present e.g., cholesterol in animal membranes.Proteins occur like a mosaic both in the interior of lipid bilayer as well as on the two surfaces .They have been called as proteins icebergs in  a sea of lipids By Singer and Nicolson (1972). proteins often have a tendency too  shift position.
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                                                                                              -SahilLIncoln

Answer 2

The fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson.

This model explains the structure of the plasma membrane of animal cells as a mosaic of components such as phospholipids, proteins, cholesterol, and carbohydrates. These components give a fluid character to the membranes.

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