Chapter 27 - Prokartyoes Notes

Chapter 27 - Prokartyoes Notes - PROKARYOTES- Chapter 27...

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PROKARYOTES- Chapter 27 PROKARYOTE MORPHOLOGY   • Unicellular • No nuclear membrane;  • NO internal organelles made of membranes • DNA = circular • SHAPE: rod (bacillus); spheres (coccus); spiral (spirillus) • Smaller ribosomes than eukaryotes (70S vs 80S) • Infoldings in cell membrane can create places for H +  gradients CELL WALL - •  PEPTIDOGLYCAN  = polysaccharide  + amino  acid  chains •  LIPOPOLYSACCHARIDES  = lipids  + polysaccharide s •  GRAM POSITIVE/NEGATIVE bacteria- react  differently  to staining       Gram  negative  pathogenicity  linked  to lipopolysacc haride  layer   MOTLITY FLAGELLA – different from eukaryotic flagella •   Single protein filament/ not 9 + 2 pattern •  TAXIS- can move toward/away from stimulus REPRODUCTION/GENETIC RECOMBINATION •  BINARY FISSION-reproduce asexually •  TRANSFORMATION- incorporate extracellular DNA •  TRANSDUCTION- viruses transfer DNA
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This note was uploaded on 02/14/2012 for the course BIO 151 taught by Professor Grinblat during the Fall '08 term at University of Wisconsin.

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Chapter 27 - Prokartyoes Notes - PROKARYOTES- Chapter 27...

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