Short Note on Cell wall

Cell wall Definition:

A cell wall is defined as the non-living component, which covers the outmost layer of a cell and is permeable in nature. 

Discovery:

Cell wall was first seen in cork cells by Robert Hooke in 1665.

Cell wall Diagram

Structure:

• The thickness of the cell wall ranges from 0.1 to 10 μm.
• A cell wall has three parts – middle lamella, primary wall and secondary wall.
• Usually present in plant cells, fungi, bacteria, etc. and absent in animal cells.

Functions:

• Provides definite shape, strength, and rigidity.
• Provides protection against mechanical stress and physical shocks.
• Helps to control cell expansion due to intake of water.
• Helps in preventing water loss from the cell.
• Responsible for transporting substances between and across the cell
• Acts as a barrier between the interior cellular components and the external environment.

Also Check – 12 Important Cell Wall Function

Also Check – 3 Layers of Cell Wall

Also Check – What is Cell wall made up of ?

Also Check – 11 Difference between Cell Wall and Cell Membrane (Plasma Membrane)

Also Check – Cell Wall – Structure , Composition , Location , Significance and Functions