What is the Fluid Mosaic Model ?

The Fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson which demonstrates the structure of a cell membrane in which the flexible lipid layer is being spread with large protein molecules. According to the mosaic model, the components of a membrane such as the proteins in the fluid like environment to form a mobile mosaic created by the sea of phospholipids.

Fluid Mosaic Model

The Fluid mosaic model theory was proposed by Nicolson and Singer. The Fluid Mosaic model depicts the structure of an animal cell’s plasma membrane as a mosaic of phospholipids, cholesterol, and carbohydrates. The membranes take on a fluid quality as a result of these components. 

Every phospholipid would have a head that is hydrophilic and outside the bilayer and a hydrophobic tail that molecules with a hydrophilic head and a hydrophobic tail, phospholipids are amphipathic molecules with hydrophilic head and hydrophobic forms the interior. Cholesterol and proteins are embedded in the bilayer, giving it a mosaic appearance. Each component is responsible for a specific task

Table of Content

  • What is the Fluid Mosaic Model ?
  • Structure of Fluid Mosaic Model
  • Components of Fluid Mosaic Model
  • Factors Affecting Plasma Membrane Fluidity
  • Restriction to Fluidity  
  • Key Points on Fluid Mosaic Model

Similar Reads

What is the Fluid Mosaic Model ?

The Fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson which demonstrates the structure of a cell membrane in which the flexible lipid layer is being spread with large protein molecules. According to the mosaic model, the components of a membrane such as the proteins in the fluid like environment to form a mobile mosaic created by the sea of phospholipids....

Structure of Fluid Mosaic Model

The Fluid Mosaic model of the cell membrane consists of a quasi fluid structure in which the proteins and the lipids are arranged in a mosaic manner. Globular proteins consist of two types which are – extrinsic proteins and intrinsic proteins. The phospholipids are the complex lipids which are made up of glycerol, two fatty acids and phosphate group which are bounded to other organic groups. Lipids (cholesterol and phospholipids) , carbohydrates are attached to some of the lipids and some proteins which are main component of the plasma membrane. Phospholipid refers to the molecules which consist of glycerol two fatty acids and a phosphate-linked head group. Another lipids are made up of four fused carbon rings which are found along the phospholipids in the membrane....

Components of Fluid Mosaic Model

Fluid mosaic model demonstrate the structure of the plasma membrane as a mosaic of the components which includes the phospholipids, cholesterol, protein and carbohydrates which provides a plasma membrane a fluid character....

Factors Affecting Plasma Membrane Fluidity

Three elements influence the fluidity of the cell membrane:...

Restriction to Fluidity

Fluidity of the plasma membrane is restricted due to:...

Key Points on Fluid Mosaic Model

Some key points of Fluid mosaic model are given below:...

FAQ’s – Fluid Mosaic Model

1. What is the mosaic fluid theory ?...