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A rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose.
- ‘Major constituents of the cell wall are cellulose, hemicelluloses and pectins.’
- ‘Components of the cell wall of fungi are powerful and general elicitors in plants.’
- ‘The direction of cell growth is determined by the orientation of the cellulose fibrils in the cell wall.’
- ‘As a cell expands, its plasma membrane and cell wall must increase in area.’
- ‘Similar reactions can be seen in animal cells although they lack the rigid cell wall.’
cell wall/ˌsel ˈwôl/
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