The Cell Wall

By: Stephanie Bianco

Where is it found?

• Cell walls are found in:– Plants– Bacteria– Algae– Fungi– Some archaea

Animals and protozoa do not have cell walls

What are cell walls made of?

• Plant and Algae Cell Walls – cellulose

• Bacterial Cell Wall – peptidoglycan

• Fungi cell wall- chitin

• Archaea cell wall- isoprenyl ether

It’s Functions

• Helps maintain shape• Controls the rate and direction of cell

growth• Provides a defensive coat• Acts as a pressure vessel

Difference between the cell wall and cell membrane

• The cell wall is found in plant cells whereas the cell membrane is found in animal cells.

• The cell wall is completely permeable whereas the cell membrane is semi – permeable.

• The cell wall is made up of cellulose. The cell membrane is made up of lipids and proteins.