Cell wall: Meaning (information, definition, explanation, facts)
On this page about Cell wall:
Tags
- Cell anatomy (31)
- Organelles (42)
- Plant physiology (47)
Encyclopedia: Cell wall
A cell wall is a fairly rigid layer surrounding a cell, located external to the cell membrane, that provides the cell with structural support, protection, and a filtering mechanism. The cell wall also prevents over-expansion when water enters the cell. They are found in plants, bacteria, archaea, fungi, and algae. Animals and most protists do not have cell walls.
Translations
How to say "Cell wall" in other languages:
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(Chinese) | 細胞壁 |
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(Japanese) | 細胞壁 |
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(German) | Zellwand |
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(Spanish) | Pared celular |
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(French) | Paroi cellulaire |
Search results
A spheroplast is a bacterium from which the cell wall has been removed but that has not lysed...
The cell envelope is the cell membrane and cell wall plus an outer membrane, if one is present. Most bacterial cell envelopes fall into two major categories: Gram positive and Gram negative...
to Gram-positive bacteria. The difference lies in the cell wall of the two types; Gram-positive bacteria have a high amount of peptidoglycan in their cell wall which the stain interacts with, while Gram-negative bacteria have a cell wall made primarily of lipopolysaccharide. The Gram-negative cell...
hypotonic environments. Their cells have rigid cell walls that prevent bursting. In fact, the pressure of the cytoplasm against the cell wall keeps the plant from wilting and losing its shape. On the other hand, cells without cell walls will swell and, if the environment is sufficiently hypotonic...
Peptidoglycans are structural components of bacterial cell walls. The peptidoglycan layer is... layer in the bacterial cell wall is a lattice structure formed from linear chains of two alternating... Peptidoglycans serve a structural role, giving bacterial cell walls their shape and strength and...
Pectin is a carbohydrate in the cell wall of plants. It is a breakdown product from hemicelluloses ( protopectins ) which is generated during ripening of the fruit. Pectin itself is later broken... softer as the cell walls degenerate. Apples, plums and oranges contain much pectin, while soft fruits...
Cytoplasmic streaming aids in the delivery of nutrients, metabolites, and genetic information to all parts of larger plant cells. It vigorously "stirs" these components about the cytoplasm. As membrane-bound organelles crawl along the inner cell wall they set the cytoplasm into motion. This...
Teichoic acid is a homopolymer of glycerol, or ribitol linked via phosphodiester bond, which is located in cell wall of gram positive bacteria. It is usually linked to lipoprotein in cytoplasmic membrane, which forms lipoteichoic acid. It provides structural support for gram positive bacteria...
cell walls can be weakened by a careful process of freezing to make them "electrocompetent". If electrocompetent bacteria and plasmids are mixed together, the plasmid can be transferred into the cell... normal tough cell walls) containing reproduced plasmid. This process is usually 10× as effective as...
therefore also called beta-lactam antibiotics . These antibiotics work by inhibiting the bacterial cell wall synthesis. This has a lethal effect on bacteria, especially on Gram-positive ones. Bacteria can...
細胞壁
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