Prokaryotic Cell(versus Eukaryotic Cell) Not compartmentalized Cell membranes lack sterols(e.g. cholesterol) Single circular chromosome Ribosomal are zos with subunits 30S (16SrRNA) 50s (5s 23SrRNA)
Prokaryotic Cell (versus Eukaryotic Cell) • Not compartmentalized • Cell membranes lack sterols (e.g. cholesterol) • Single circular chromosome • Ribosomal are 70S with – subunits 30S (16S rRNA) – 50S (5S & 23S rRNA)
Bacteria versus Archaebacteria ● Eubacteria peptidoglycan(murein muramic acid Archaebacteria pseudomurein no muramic acid
Bacteria versus Archaebacteria • Eubacteria – peptidoglycan (murein) – muramic acid • Archaebacteria – pseudomurein – no muramic acid
Bacteria versus Archaebacteria 16S TRNA sequence very different
Bacteria versus Archaebacteria • 16S rRNA –sequence very different
An overiew of procaryotic cell structre 1. size width× length E colic( average):1.1-1.5μm×2.0-6.0μm The smallest: Nanobacteria:0.05-02u m monsteous microbe: >10-50u m
An overiew of procaryotic cell structre 1.size:width×length E.coli(average): 1.1-1.5m × 2.0-6.0 m ? The smallest: Nanobacteria: 0.05-0.2 m ? monsteous microbe: >10-50 m
2. Shape and arrangement Coccus or Cocci R Spirillum or spirilla Spirochete Budding and appendaged coding and appendaged t Filamentous
Coccus or Cocci Rod Spirillum or Spirilla Spirochete Budding and appendaged Filamentous 2.Shape and arrangement