Question

with the help of fluid mosaic model write the structure,properties and function of the plasma membrane.

Answer 1

$\Huge{\sf Fluid \ Mosaic \ Model \colon}$

• The fluid mosaic model was given by Singer and Nicholson

• According to this model,the plasma membrane is a double layered structure. The plasma membrane is a bilipid layer with two polar ends to the extremes and the non polar ends to the inside

• In addition to the lipids,proteins,fats and some nutrients are also present in the bilayer

• Some proteins like tunnel proteins run throughout the canals while the carrier proteins are surface proteins

• Distribution of proteins and lipids is around 18 % and 76 %

Functions

• Plasma membrane is a selectively permeable membrane,it regulates the influx and outflux of substances by the following mechanisms

Diffusion

Osmosis

Active Transport

• It is involved in protection of cells from external pathogens and high turgor pressures

• It aids the process of translocation of substances

Answer 2

The fluid mosaic model can't be called plasma membrane as it have it's different properties

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