Bacterial Anatomy

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Bacterial Anatomy

  1. 1. Bacteria vs. Eucaryotes www.freelivedoctor.com
  2. 2. Three Cellular Domains www.freelivedoctor.com
  3. 3. www.freelivedoctor.com
  4. 4. Diversity of Bacterial Shapes www.freelivedoctor.com
  5. 5. Coccus (pl. Cocci) www.freelivedoctor.com
  6. 6. Diversity of Bacterial Shapes www.freelivedoctor.com
  7. 7. Coccobacillus www.freelivedoctor.com
  8. 8. Diversity of Bacterial Shapes www.freelivedoctor.com
  9. 9. Vibrio www.freelivedoctor.com
  10. 10. Diversity of Bacterial Shapes www.freelivedoctor.com
  11. 11. Bacillus (pl. Bacilli) www.freelivedoctor.com
  12. 12. Escherichia coli www.freelivedoctor.com
  13. 13. Diversity of Bacterial Shapes www.freelivedoctor.com
  14. 14. Spirillum www.freelivedoctor.com
  15. 15. Diversity of Bacterial Shapes www.freelivedoctor.com
  16. 16. Spirochete www.freelivedoctor.com
  17. 17. Bacterial Cellular Arrangements www.freelivedoctor.com
  18. 18. Filamentous Bacteria www.freelivedoctor.com
  19. 19. Bacterial Anatomy (Overview) www.freelivedoctor.com
  20. 20. Nucleoid www.freelivedoctor.com
  21. 21. Endospores www.freelivedoctor.com
  22. 22. Bacterial Anatomy (Cell Envelopes) www.freelivedoctor.com
  23. 23. Gram Positive Cell Envelope www.freelivedoctor.com
  24. 24. Gram Negative Cell Envelope www.freelivedoctor.com
  25. 25. Lipopolysaccharide www.freelivedoctor.com
  26. 26. Endosymbiosis www.freelivedoctor.com
  27. 27. Mitochondrian www.freelivedoctor.com
  28. 28. Chloroplast www.freelivedoctor.com
  29. 29. Bacterial Anatomy (Plasma Membrane) www.freelivedoctor.com
  30. 30. Plasma Membrane www.freelivedoctor.com
  31. 31. Movement Across Membranes water www.freelivedoctor.com
  32. 32. Osmosis & Tonicity Cell Walls Plasmolysis www.freelivedoctor.com
  33. 33. Protoplast & Spheroplast A P rotoplast is a Gram- P ositive bacterium without its cell wall A Spheroplast is a Gram-Negative bacterium lacking most of its cell wall www.freelivedoctor.com Hypotonic medium Isotonic or Hypertonic medium
  34. 34. Bacterial Anatomy (Flagella) www.freelivedoctor.com
  35. 35. Flagellum (p. Flagella) ) www.freelivedoctor.com
  36. 36. Flagellum (p. Flagella) www.freelivedoctor.com
  37. 37. Taxis Negative Chemotaxis is away from specific substances Positive Chemotaxis is towards specific substances Negative Phototaxis is away from light Positive Phototaxis is towards light www.freelivedoctor.com
  38. 38. Axial Filament (EndoFlagella) www.freelivedoctor.com
  39. 39. Bacterial Anatomy (Pili) www.freelivedoctor.com
  40. 40. Pilus (pl. pili) -- Fimbria www.freelivedoctor.com
  41. 41. Sex Pili www.freelivedoctor.com
  42. 42. Cell-Surface Fibrils Electron micrograph of an ultra-thin section of a chain of group A streptococci. The cell surface fibrils, consisting primarily of M protein, are clearly evident. The bacterial cell wall, to which the fibrils are attached, is also clearly seen as the light staining region between the fibrils and the dark staining cell interior. Incipient cell division is also indicated by the nascent septum formation (seen as an indentation of the cell wall) near the cell equator. The streptococcal cell diameter is equal to approximately one micron. www.freelivedoctor.com
  43. 43. Bacterial Anatomy (Glycocalyx) www.freelivedoctor.com
  44. 44. Glycocalyx www.freelivedoctor.com
  45. 45. Bacterial Anatomy (Overview) www.freelivedoctor.com

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