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Saturday, November 30, 2013

All about Bacteria.

Notes Bacteria be broken, single cubiclephoneular telephones and are the altogether ones characterized by prokaryotic organization. Too tiny to see with the in the raw eye, a bacterial cell is usually one of deuce-ace basic shapes; bacillus, a rod shaped cell; coccus, a spherical cell; or spirillum, a spiral cell. A few kinds of bacteria aggregate into stalked structures or filaments. A bacterias plasma membrane is case within a cell smother. Members of the kingdom Eubacteria give way a cell surround made of peptidoglycan, a vane of polysaccharide molecules link together with reachs of amino acids. somewhat eubacteria stick a cell wall cover with an out membrane layer made of large molecules called lipopolysaccharides. A lipopolysaccharide is a chain of sugar molecules with a lipid wedded to one end. removed of the cell wall and membrane, many bacteria have a gelatinous layer called a capsule. Eubacteria are sort out by differences in their cell walls. A bacter ium with a cell wall containing a large hail of peptidoglycan is categorize as gram-positive. A bacterium with a cell wall containing a thin layer of peptidoglycan covered by an outer(prenominal) membrane is classified as gram-negative. These terms refer to a bacteriums reaction to a staining procedure developed by the Danish microbiologist Hans Gram.
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Some bacteria form thick-walled endospores around their chromosomes and a small bit of cytoplasm when they are exposed to vinegarish conditions much(prenominal) as drought or high temperatures. The formation of endospores in the bacterium Clostridium botulinum is r esponsible for botulism, a ailment often c! onsidered to be a form of food poisoning. Bacteria, which heart all eukaryotes combined, differ from eukaryotes in at least septet important respects. 1.Internal compartmentalizationBacteria are prokaryotes and lack a cell nucleus, strange eukaryotes. The cytoplasm of bacteria has very little internal organization. It contains no internal compartments or membrane systems. 2.Cell... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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