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BACTERIA NOTES

BACTERIA NOTES. Bacteria are very small. This is a pore in human skin and the yellow spheres are bacteria. Bacteria are very small compar-ed to cells with nuclei. Bacteria compared to a white blood cell that is going to eat it. Bacteria.

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BACTERIA NOTES

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  1. BACTERIA NOTES

  2. Bacteria are very small

  3. This is a pore in human skin and the yellow spheres are bacteria

  4. Bacteria are very small compar-ed to cells with nuclei

  5. Bacteria compared to a white blood cell that is going to eat it Bacteria

  6. Clean skin has about 20 million bacteria per square inch

  7. Evolution/Classification • Most numerous on Earth • Most Ancient • Microscopic Prokaryotes

  8. Kingdom Eubacteria • Can have one of three basic shapes • Bacilli – rod-shaped • Spirilla – spiral-shaped • Cocci – sphere-shaped • Staphylococci – grape-like clusters Streptococci – in chains SHOW ME

  9. BACTERIA PICS

  10. Bacillus bacteria are rod or sausage shaped

  11. Coccus bacteria are sphere or ball shaped

  12. Spirillium bacteria have a corkscrew shape

  13. Diplo-bacteria occur in pairs, such as the diplococcus bacteria that causes gonorrhea

  14. Staphylo - bacteria occur in clumps, such as this staphylococcus bacteria that causes common infections of cuts

  15. Strepto- bacteria occur in chains of bacteria, such as this streptococcus bacteria that causes some types of sore throats

  16. Spirillium bacteria

  17. Diplobacillus bacteria

  18. Streptococcus bacteria

  19. Staphylococcus bacteria

  20. The tip of a needle The red and yellow dots are bacteria

  21. STRUCTURE OF BACTERIA

  22. No Nucleus-DNA in Cytoplasm

  23. Nutrition and Growth • Heterotrophic or Autotrophic

  24. These heterotrophic bacteria digest oil -- remember oil is partially decayed plant and animal cells

  25. REPRODUCTION IN BACTERIA

  26. No Nucleus-DNA in Cytoplasm

  27. BACTERIA REPRODUCES BY FISSION First the chromosomal DNA makes a copy The DNA replicates

  28. NEXT THE CYTOPLASM AND CELL DIVIDES The two resulting cells are exactly the same

  29. Bacteria and Disease

  30. Some bacteria cause diseases --Disease causing bacteria are called PATHOGENIC

  31. Helicobacter pylori is the pathogenic bacteria that can causes ulcers

  32. Leprosy is a bacterial infection that decreases blood flow to the extremities resulting in the deterioration of toes, ears, the nose and the fingers.

  33. BOTULISM

  34. CHOLERA

  35. DENTAL CARIES

  36. ROCKY MOUNTAIN SF

  37. LYME DISEASE

  38. SALMONELLA

  39. STREP THROAT

  40. TUBERCULOSIS

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