CBSENEETClass 9
What is the cell wall made up of?
Answer
In plant cells the cell wall is made up mainly of cellulose, a tough complex carbohydrate.
The working
Plant cell wall
The rigid outer covering of a plant cell is made mostly of cellulose, which gives it strength and shape.
Other organisms
The cell wall of fungi is made of chitin, while bacterial cell walls are made of peptidoglycan.
Function
The cell wall provides structural support, protection and shape, and helps cells withstand changes in water pressure.
Exam point
The cell wall is fully permeable and is found in plant cells but absent in animal cells.
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