The cell wall - Thecellwall.,suchasfungi, membrane.Infungi,...

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The cell wall. Many species of eukaryotes, such as fungi, contain a cell wall outside the cell  membrane. In fungi, the cell wall contains a complex polysaccharide called chitin as well as some  cellulose. Algal cells, by contrast, have no chitin; rather, their cell walls are composed exclusively of  the polysaccharide cellulose.  Cell walls provide support for eukaryotic cells and help the cells resist mechanical pressures while  giving them a boxlike appearance. The cell walls are not selective devices, as are the cell  membranes. The cell membrane. The eukaryotic cell membrane conforms to the fluid mosaic model found in the  prokaryotic membrane. In eukaryotes, the membrane is a dynamic structure governing passage of  dissolved molecules and particles into and out from the cytoplasm. However, it neither contains the  enzymes found in the prokaryotic cell nor functions in DNA replication. 
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