cell wall

cell wall
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.

Dictionary of molecular biology. 2004.

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  • cell wall — n. Biol. the nonliving covering or separating wall of a cell; esp., the relatively rigid covering of a plant cell, containing cellulose, hemicellulose, lignin, etc …   English World dictionary

  • cell wall — n the usu. rigid nonliving permeable wall that surrounds the plasma membrane and encloses and supports the cells of most plants, bacteria, fungi, and algae * * * a rigid structure that lies just outside of and is joined to the plasma membrane of… …   Medical dictionary

  • cell wall — cell′ wall′ n. cbl the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell • Etymology: 1840–50 …   From formal English to slang

  • cell wall — cell wall. См. клеточная стенка. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Cell wall — A cell wall is a tough, flexible and sometimes fairly rigid layer surrounding a cell, located external to the cell membrane, which provides the cell with structural support, protection, and acts as a filtering mechanism. A major function of the… …   Wikipedia

  • cell wall — 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 • Hypernyms: ↑layer • Part Holonyms: ↑plant cell * * * noun 1. : the somewhat rigid… …   Useful english dictionary

  • cell wall — noun /sɛl wɔːl,sɛl wɔːl,sɛl wɑːl/ A thick, fairly rigid, layer formed around individual cells of bacteria, Archaea, fungi, plants, and algae (but not animals and other protists which generally have cell membranes without cell walls). The cell… …   Wiktionary

  • cell wall — UK / US noun [countable] Word forms cell wall : singular cell wall plural cell walls biology a strong layer that surrounds each cell in some living things, protecting them and giving them shape …   English dictionary

  • cell wall — Biol. the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell. See diag. under cell. [1840 50] * * * …   Universalium

  • cell wall — /ˈsɛl wɔl/ (say sel wawl) noun the definite boundary or wall which is usually part of the structure of a biological cell, especially a plant cell. See cell1 (def. 4a) …  

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