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MICROBES

MICROBES. The Virus. Genetic material + Protein coat Geometric shapes Non -living, Reproductive machine. Villains. HIV Hepatitis Herpes Influenza Smallpox Ebola. Infective Pathways. Lytic

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MICROBES

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  1. MICROBES

  2. The Virus • Genetic material + Protein coat • Geometric shapes • Non -living, Reproductive machine

  3. Villains • HIV • Hepatitis • Herpes • Influenza • Smallpox • Ebola

  4. Infective Pathways • Lytic Virus recognizes cell begins cycle of infection immediately. (illness begins) (influenza, common cold, ebola) • Lysogenic Virus “hides” in genetic material of host.(provirus) Infective cycle is delayed & infection is harder to treat. (HIV, hepatitis, herpes)

  5. http://www.youtube.com/watch?v=Ez-_wBriTTo&feature=related Vaccines

  6. Heroes ? • Variegated leaves - flowers

  7. CONTROL • Vaccines • Temperate – harmless form of a virus is injected • Live – small amts of weakened virus BOTH encourage the immune system to make antibodies.

  8. http://www.youtube.com/watch?v=zG4hX8TEkAA http://www.youtube.com/watch?v=SoF_eKtbonU&feature=related

  9. Bacteria • Smallest living organism • Survive in every environment • Helpful & harmful • 3 shapes, orientations

  10. Spherical (Coccus)

  11. Rod (Bacillus)

  12. Helical (Spirillum)

  13. Gram + / Gram - • Staining technique used to help identify bacterial flora • Gram + flora = peptidoglycan in cell wall (stain purple in crystal violet) • Gram – flora = no ppg, turn pink when safranin counter stain added.

  14. Heroes ! • Help digest food, absorb nutrients • Boost immune system

  15. Beneficial species • Acidophilus • L. casei immunitas

  16. Villains • E. coli 0157 • Botulinum • Anthrax

  17. Exposure ? • Contaminated food • Unclean hands • Animal carriers • Warfare

  18. Protection ? http://youtube.com/watch?v=4lmwbBzClAc&feature=related http://www.youtube.com/watch?v=tqOVYpkZ0qs • WASH HANDS ! • Clean / inspect food • Clean, pest free living area • Vaccines • Be alert

  19. Treatment Alexander Fleming 1928 Penicillium notatum mold Killed bacteria in culture First Antibiotic – transformed treatment of disease and infection

  20. BEWARE Antibiotic resistance Misuse treatments for viral infections or repeatedly for bacterial infections Not all bacteria are destroyed by the antibiotic Stronger, resistant bacteria remain More difficult to destroy the bacteria when it infects again

  21. MRSA Methicillin Resistant Staphylococcus aureus

  22. Page 468 - text Diagram, color and label the typical bacterium in your notes

  23. Protists

  24. Single cell critters (Protists) • Eukaryotes (true nucleus, organelles) • Base of food web • Both free living and parasitic

  25. Protist Classification • Rhizopods (amoeba) • Ciliates (paramecium) • Sporozoans (malaria- Plasmodium)

  26. Rhizopod Locomotion

  27. Ciliate Locomotion

  28. Flagellate Locomotion

  29. Villains • Entamebahistolytica (dysentery) • Plasmodium (malaria)

  30. PARASITIC PROTISTS

  31. Protist Populations

  32. Microbes • Both helpful & harmful… • Many that are harmful can be treated • Avoid contaminated food, water • Vaccines when available ! • Common sense

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