Cell walls are found in more than just plants. They are also found in bacteria, archaea, fungi, and algae.
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. Animals and most protists do not have cell walls.
The cell wall is constructed from different materials dependent upon the species.
In plants, the cell wall is constructed primarily from a carbohydrate polymer called cellulose, and the cell wall can therefore also functions as a carbohydrate store for the cell.
In bacteria, peptidoglycan forms the cell wall.
Archaea have various chemical compositions, including glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides.
Fungi possess cell walls of chitin, and algae typically possess walls constructed of glycoproteins and polysaccharides, however certain algal species may have a cell wall composed of silicic acid. Often, other accessory molecules are found anchored to the cell wall.
2007-03-17 21:53:57
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answer #1
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answered by elchistoso69 5
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Non! An organism is one or several living cells with a cell wall. A uni-cell algae is an organism with a cell wall and a willow tree is a multi-cellular organism with billions of cells which each one has a cell wall.
If you are asking about organelles in the cell wall; the answer again is non. The organelles are inside a cell, in the cytoplasm.
If you want to know what are the components of the cell wall then the answer is carbohydrates (cellulose, cellulose and pectin) and proteins in plants and cellulose and a variety of glycoproteins in algae.
2007-03-18 03:52:52
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answer #2
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answered by smarties 6
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No organims can be found in a cell wall. But a cell wall could be found in organisms such as plants or those who belong to Kingdon Plantae.
2007-03-18 03:57:47
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answer #3
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answered by moohlan 2
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a palnt cell wall is a non-living thing,it is made up of cellulose
2007-03-18 07:18:24
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answer #4
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answered by Ana C 3
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Steel bars and bricks, coated in concrete.
very hard to escape from.
2007-03-18 03:49:56
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answer #5
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answered by Anonymous
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