Bacterial_Cell_walls

Bacterial_Cell_walls -...

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Bacteria
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Shapes – First level of classification
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Bacterial Genomes are single DNA chromosomes but some strain CAN have extrachromosomal material
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Antibiotics are made naturally by microbes to fight off other competing microbes (ie Penicillium ). Since the molecular pathways differ from prokaryotes to eukaryotes, many antibiotics will kill pathogenic bacteria without harming us.
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Lipopolysaccharide layer
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From http://medic.med.uth.tmc.edu/slnk/00001467.gif
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Gram Negative Petidoglycan from:
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Unformatted text preview: http://www.bact.wisc.edu/themicrobialworld/Structure.html Gram positive peptidoglycan (from the same website as in the previous slide). This structure is more sensitive to the beta-lactam antibiotics (like ampicillin) because these bacteria lack the outer LPS layer as protection. Note the presence of the Interpeptide bridge. Archaea lack either type of peptidoglycan! What are plant cell walls made of?? Disaccharides Polysaccharides...
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This note was uploaded on 12/16/2010 for the course BIOL 1010 taught by Professor Anafi/quinlan during the Spring '08 term at York University.

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Bacterial_Cell_walls -...

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