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Learn about the cell wall , a rigid and protective outer covering found in plants, fungi, algae, bacteria, and archaea. Explore the structure, composition, and functions of different types of cell walls with diagrams and examples. Explore the definition of the cell wall , structure, layers, compositions and functions across plants, fungi and microbes. The cell wall is the outermost protective layer of the cell in plant cells, bacteria, fungal cells, and protists. The cell wall is an additional layer of protection on top of the cell membrane. You can find cell walls in both prokaryotes and eukaryotes, and they are most common in plants, algae, fungi and bacteria. However, animals and protozoans do not have this type of structure. Cell walls tend to be rigid structures that help maintain the shape of the cell .
