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Microbiology Slides

Microbiology Slides. Bio 104 Practical. The Structure of the Prokaryote Cell. Small size ( 0.5 to 2um) Large surface area to volume ratio A variety of shapes Outer cell wall- very thick made of specialized molecules

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Microbiology Slides

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  1. Microbiology Slides Bio 104 Practical

  2. The Structure of the Prokaryote Cell • Small size ( 0.5 to 2um) • Large surface area to volume ratio • A variety of shapes • Outer cell wall- very thick made of specialized molecules • Cell membranes may have a different constituency of molecules from eukaryote cells • Ribosomes smaller • No organelles, no nuclear membrane • 1 ds circular loop of DNA

  3. Shapes of the Bacteria • Bacillus • Coccus • Vibrio • Spirillum • Spirochete • Pleiomorphism- Some bacterial shapes vary within a culture. This can occur when the nutrients are used and wastes have built up

  4. Cell Morphology

  5. Arrangement of bacteria • Groups of two- diplo • Chains- strepto • Large groups- like grape clusters- staphylo • Division on 3 planes- sarcinae- 8 cells arranged in a cube • Division on two planes produces tetrads

  6. Bacterial Shapes

  7. Diplococcus

  8. Streptobacilli

  9. Spirillum

  10. Spirochetes

  11. Streptobacilli

  12. Streptococcus pyogenes- strep throat

  13. Staphylococcus

  14. Staphylococcus

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