Cell Wall
Contents
Key Stage 3
Meaning
The cell wall is a layer covering the cell membrane of some cells.
Function
- The cell wall protects the cell and keeps the cell in the same shape.
About Cell Walls
- The cell wall is part of the cells in plants, fungi and bacteria.
- The cell walls of plants is what makes fibre in our diet.
- Animal cells do not have a cell wall.
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| The cell wall of a plant cell is the outer layer. | The cell wall of a bacteria protects it from the immune system. |
Key Stage 4
Meaning
The cell wall is a layer covering the cell membrane of plant, fungal and bacterial cells.
Function
- The cell wall can protect the cell from some toxic chemicals and some viruses.
- The cell wall keeps the cell in the same shape.
About Cell Walls
- The cell walls of plant cells are made of cellulose.
- The cell walls of fungal cells are made of chitin.
- The cell walls of bacteria are made of murein.
- Animal cells and protists do not have cell wall.
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| The cell wall of a plant cell is the outer layer. | The cell wall of a bacteria protects it from the immune system. |
References
AQA
Edexcel
- Cell walls, page 5, GCSE Biology, Pearson, Edexcel
- Cell walls, page 5, GCSE Combined Science, Pearson Edexcel