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More Review. Are Viruses Alive?. Virus Structure. What is an envelope? What is just a viroid made of? What is a prion made of?. Know Your Terms. Fever A utotroph P athogenic Host I mmunity Vaccine B acteriophages A naerobic C hemosynthesis . Organism that doesn’t use oxygen

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  1. More Review

  2. Are Viruses Alive?

  3. Virus Structure What is an envelope? What is just a viroid made of? What is a prion made of?

  4. Know Your Terms • Fever • Autotroph • Pathogenic • Host • Immunity • Vaccine • Bacteriophages • Anaerobic • Chemosynthesis Organism that doesn’t use oxygen An increase in body temperature Viruses that attack only bacteria Injected dead or weakened virus to increase immunity Organisms that can make their own food Resistance to a disease Using energy from inorganic chemicals to make food Disease causing An organism that has another organism living on or in it

  5. Shapes of Viruses Helical Polyhedral Binal Filovirus

  6. What shape is it?

  7. What shape is it?

  8. What shape is it?

  9. What shape is it?

  10. What shape is it?

  11. What shape is it?

  12. What shape is it?

  13. How were viruses discovered? Dmitri IvanovskyMartinusBeijerinck

  14. Viral Diseases?

  15. Virus Life Cycle Viruses Replicate, not reproduce!

  16. Lytic vs. Lysogenic?

  17. How can we use viruses for good?

  18. Kingdom MONERA – all prokaryotes (bacteria)

  19. Monera Archaebacteria Eubacteria So different that many scientists have them as two separate kingdoms

  20. Archaebacteria – “ancient bacteria” Methanogens Thermophiles Halophiles

  21. Eubacteria – “true bacteria”, live in less harsh conditions, found everywhere E. coli Salmonella

  22. Shape – 3 basic shapes Coccus Bacillus Spirillum

  23. Cell Arrangement • Diplo- in pairs • Strepto – in chains • Staphylo– in a cluster (like grapes) • Tetrad – a group of 4 coccusbacteria • Sarcina – group of 8 coccus bacteria in a cube like arrangement

  24. diplococcus

  25. streptococcus

  26. bacillus

  27. spirillum

  28. diplobacillus

  29. staphylococcus

  30. coccus

  31. tetrad

  32. streptobacillus

  33. Food Sources Autotroph Heterotroph Photosynthesis Parasite Chemosynthesis Saprophyte

  34. Respiration • Anaerobic • Aerobic

  35. Reproduction • Conjugation • Transformation • Binary fission Asexual? Sexual? Most common?

  36. Favorable Conditions? • Warmth • Moisture • Darkness • Food What can some bacteria do to survive if conditions are not favorable?

  37. Bacterial Diseases?

  38. Bacterial Diseases Endotoxins Exotoxins

  39. Are all bacteria bad? • Benefits?

  40. Disease • Any malfunction of the body

  41. Infectious – caused by germs • Germs – bacteria, viruses, protozoa, fungi, small animals Viruses bacteria fungi roundworms flatworms

  42. Communicable • Can be spread from 1 organism to another Which is the most common? Direct contact Indirect contact Airborn Contaminated food / water Animal bites

  43. Direct Contact • Touching an infected person Shaking hands High five

  44. Indirect Contact • Touching an object that an infected person has touched

  45. Air born • Travel through the air – effect respiratory system Cold viruses in droplets can be transmitted to a person as far as 15 feet away

  46. Animal Bites

  47. Bubonic plague buboes

  48. Malaria

  49. Lyme disease

  50. Rabies

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