The cell wall is a tough, flexible but sometimes fairly rigid layer that surrounds some types of cells. It is located outside the cell membrane and provides these cells with structural support and protection, in addition to acting as a filtering mechanism. A major function of the cell wall is to act as a pressure vessel, preventing over-expansion ...
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http://en.wikipedia.org/wiki/Cell_wall
(from the article `bacteria`) Lying outside of this membrane is a rigid wall that determines the shape of the bacterial cell. The wall is made of a huge molecule called ... ...by different means, such as injecting the nucleic acid through the male (sex) pili of the bacterium. In all bacterial viruses, penetration ... [2 related artic...
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http://www.britannica.com/eb/a-z/c/42
(from the article `cell`) The plant cell wall is a specialized form of extracellular matrix that surrounds every cell of a plant and is responsible for many of the ... Whereas starches and glycogen represent the major reserve polysaccharides of living things, most of the carbohydrate found in nature occurs as ... ...hand, generally h...
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http://www.britannica.com/eb/a-z/c/42
Plant cell wall structure The rigid, outermost covering of the cells of plants, bacteria, and some protists. It is formed of cellulose fibers embedded in a polysaccharide-protein matrix. The primary cell wall is thin and flexible, whereas the secondary cell wall is stronger and more rigid and th...
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http://www.daviddarling.info/encyclopedia/C/cellwall.html
Tough wall around plant cells. Helps to support the cell.
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1. <cell biology> Extracellular material serving a structural role. ... 2. <plant biology> In plants the primary wall is pectin rich, the secondary wall mostly composed of cellulose. ... 3. <microbiology> In bacteria, cell wall structure is complex: the walls of gram-positive and gram-negative bacteria are distinctly different. Re...
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Extracellular material serving a structural role. In plants the primary wall is pectin-rich, the secondary wall mostly composed of cellulose. In bacteria, cell wall structure is complex: the walls of Gram positive and Gram negative bacteria are distinctly different. Removal of the wall leaves a protoplast or spheroplast.
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Type: Term Definitions: 1. the outer layer or membrane of some animal and plant cells; in the latter, it is mainly cellulose. 2. in bacteria, the rigid structure, usually containing a peptidoglycan layer, that provides osmotic protection and defines bacterial shape and staining properties.
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http://www.medilexicon.com/medicaldictionary.php?t=99521
Rigid structure deposited outside the cell membrane. Plants are known for their cell walls of cellulose, as are the green algae and certain protists, while fungi have cell walls of chitin.
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http://www.ucmp.berkeley.edu/glossary/glossary_4.html
[
n] - a thin membrane around the cytoplasm of a cell
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http://www.webdictionary.co.uk/definition.php?query=cell%20wall
a structure in the cell envelope of some cells that helps the cell maintain its shape and withstand changes in osmotic pressure
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https://courses.lumenlearning.com/microbiology/chapter/glossary/
noun a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier
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https://www.encyclo.co.uk/local/20974
Tough outer surface of the cell in plants. It is constructed from a mesh of cellulose and is very strong and only very slightly elastic so that it protects the cell and holds it in shape. Most living cells are turgid (swollen with water; see turgor). Water is absorbed by osmosis causing the cell ...
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the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell. See diag. under
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https://www.infoplease.com/dictionary/cell-wall
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