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If cell walls were truly rigid, plants could not wilt (think about it). The cell wall is a woven flexible framework that is made rigid primarily by the osmotic pressure exerted from the inside by the cell inside its membrane. Further reinforcement is made in vascular plants by the addition of lignin to the walls once primary growth is complete.
Description: a basic diagram on the elements conforming a prokaryote cell. in this case a bacteria: Date: 26 April 2006: Source: i did the diagram myself using adobe illustrator , as source for the information i used this websites , ,, and
Diagram of a prokaryotic cell, a bacterium with a flagellum. A prokaryote (/ p r oʊ ˈ k ær i oʊ t,-ə t /; less commonly spelled procaryote) [1] is a single-celled organism whose cell lacks a nucleus and other membrane-bound organelles. [2]
Voting period is over. Please don't add any new votes. Voting period ends on 5 Nov 2015 at 11:36:04 (UTC). Original – A diagram of the Prokaryotic Bacteria cell, showing its parts, which is the Pilus, Cytoplasm, Ribosomes, Nucleoid (DNA), Plasma membrane, Cell wall, Capsule, and the Flagellum.
English: A diagram of a typical prokaryotic cell. This diagram, made in Adobe Illustrator, is an improved version of a similar diagram, Prokaryote cell diagram.svg, which was also made by LadyofHats. Besides general appearance changes, this version adds plasmids and pili, and notes that DNA is circular.
The DNA of a prokaryotic cell consists of a single circular chromosome that is in direct contact with the cytoplasm. The nuclear region in the cytoplasm is called the nucleoid. Most prokaryotes are the smallest of all organisms, ranging from 0.5 to 2.0 μm in diameter. [1] [page needed] A prokaryotic cell has three regions:
Peptidoglycan is made up of a polysaccharide backbone consisting of alternating N-Acetylmuramic acid (NAM) and N-acetylglucosamine (NAG) residues in equal amounts. Peptidoglycan is responsible for the rigidity of the bacterial cell wall, and for the determination of cell shape. It is relatively porous and is not considered to be a permeability ...
The prokaryotic cytoskeleton is the collective name for all structural filaments in prokaryotes. [2] Some of these proteins are analogues of those in eukaryotes , while others are unique to prokaryotes.