Cell membrane helps to protect from the internal environment.Cell wall helps to protect from the external environment.The structure of the cell wall is fixed but the cell membrane can be changed as per the requirements.The cell wall is the outermost part of the plant cell and the cell membrane is the outermost part of the animal cell.Cell walls are present in plants, fungi, and in some bacteria and cell membranes present in all types of cells, inducing humans, animals, bacteria, and plants, etc.Also, it is flexible to change the shape whenever needed. The cell membrane is a thin and delicate structure. The cell wall is a thick and rigid structure with a fixed shape. It helps to protect as well as maintains the internal environment of the cell It helps to protect the cell from external environmental damage. The size of the cell membrane is 7.5–10 mm in thickness The size of the cell wall is 0.1 μm to several μm in thickness The cell membrane is made up of lipoproteins and carbohydrates. The cell wall is made up of pectin, chitin, glycolipids, cellulose, lignin, glycoproteins, and sugar.

The cell membrane is the outermost part of the animal cell The cell wall is the outermost part of the plant cell Cell wall present in plants and some fungi, bacteria, and algaeĬell membranes are present in all types of cells, including humans, animals, bacteria, and plants, etc.

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