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
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 wall is external to the cell membrane and serves a structural function helping the cell maintain its shape and protecting the cell from damage.
The cell wall is the tough, usually 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 when water enters the cell. Cell walls are found in plants, bacteria, fungi, algae, and some archaea. Animals and protozoa do not have cell walls. The material in the cell wall varies between species, and can also differ depending on cell type and developmental stage. In bacteria, peptidoglycan forms the cell wall. Archaean cell walls have various compositions, and may be formed of glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides. Fungi possess cell walls made of the glucosamine polymer chitin, and algae typically possess walls made of glycoproteins and polysaccharides. Unusually, diatoms have a cell wall composed of biogenic silica. Often, other accessory molecules are found anchored to the cell wall.
U.S. National Library of Medicine
The outermost layer of a cell in most PLANTS; BACTERIA; FUNGI; and ALGAE. The cell wall is usually a rigid structure that lies external to the CELL MEMBRANE, and provides a protective barrier against physical or chemical agents.
The numerical value of cell wall in Chaldean Numerology is: 9
The numerical value of cell wall in Pythagorean Numerology is: 8
Sample Sentences & Example Usage
What's nice about proteins like this fcMBL from the innate immune system is that they bind the sugars which are part of the cell wall of the pathogens. They bind to the cell wall of bacteria, of fungi, of many viruses and many parasites and they bind to toxins as well.
Now copsin kills bacteria by binding to an essential cell wall building block, the cell wall you can consider like the achilles heel of bacteria, so when you disrupt the cell wall synthesis bacteria usually dies rapidly. The binding pattern of copsin on this building block is very unique and therefore copsin is active against bacteria resistant to conventional antibiotics.
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Translations for cell wall
From our Multilingual Translation Dictionary
- paret cel·lularCatalan, Valencian
- buněčná stěnaCzech
- pared celularSpanish
- paroi cellulaireFrench
- parete cellulareItalian
- ściana komórkowaPolish
- parede celularPortuguese
- клеточная стенкаRussian
- hücre çeperi, hücre duvarıTurkish
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