Microbiology Test 2

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Microbiology Test 2
2011-11-04 13:59:19
microbiology celeste matthews

Microbiology study guide
Show Answers:

  1. What is a prion?
    • An infectious protein particle.
    • It is smaller than a virus.
  2. What are two diseases caused by prions?
    1. Mad cow disease

    2. Kuru
  3. What is a disease caused by a rickettsia?
    Rocky Mountain Spotted Fever
  4. Do antibiotics such as penicillin kill viruses?
  5. Name a disease caused by a fungus
    athletes foot
  6. Name a disease caused by a protist
  7. Name a disease caused by an animal
    hookworm disease
  8. Entamoeba histolytica
    amoebic dysentery (diarrhea)
  9. Plasmodium - malaria
    infection of red blood cells
  10. Trapanosoma brucei
    African sleeping sickness
  11. Trapanosoma cruzi
    chagas disease; fever, systemic infection, death
  12. Roundworms
  13. Cestodes
  14. Trematodes
  15. Enterobius vermicularis
  16. Why does the US have less problems with
    parasitism than developing nations do?
    Sanitation, flushing toilets, healthcare
  17. Virus
    • infective particle, contains DNA or RNA
    • Covered with a capsid.
    • May or may not have an envelope
  18. Bacteriophage
    • virus that infects a bacteria
    • Bacteriphages can make bacteria be more virulent
  19. Why can viruses not be grown in ordinary
    growth media such as nutrient agar?
    They must grow in a living cell
  20. Propionibacterium acnes
  21. Impetigo
    caused by Staphyococcus areus or Streptococcus pyogenes
  22. Cellulitis
    caused by Staphyococcus areus or Streptococcus pyogenes or other infectious agents
  23. Staphylococcal Scalded Skin Syndrome
    Caused by Staphylococcus aureus
  24. Toxic epidermal necrolysis
    caused by a drug reaction
  25. Why does one Strep or Staph cause a
    mild case of impetigo and another organism of the same species can cause necrotizing
    fascilitis or “flesh eating disease”
    • Bacteriophages encode for extreme virulence.
    • Patient resistance to bacteria varies.
  26. Why is an open or compound fracture
    considered to be an immediate emergency?
    It can become infected and get gangrene.
  27. Clostridium perfringens
    gas gangrene (also a cause of food poisoning)
  28. Leprosy (Hansen’s Disease)
    Mycobacterium leprae
  29. What common non-human organism can
    harbor leprosy?
  30. Is leprosy contagious?
    Yes, but it requires close contact and a susceptible host
  31. Chicken pox
    caused by Human Herpes 3, varicella, a herpes virus, DNA
  32. How do people get shingles?
    The herpes that causes shingles becomes dormant, but continues to live in the nerves of infected people. Stress causes the virus to become active.
  33. Should children with chicken pox or other febrile disease be given aspirin for fever? Why or why not?
    No, aspirin in febrile children is associated with Reye’s Syndrome which can cause encephalopathy and death.
  34. Smallpox
    caused by the variola virus, an Orthopox virus
  35. Prevention of smallpox
    vaccine developed by Edward Jenner, from cowpox virus.
  36. Measles
    Paramyxovirus, can cause death
  37. Rubella
    Rubivirus; causes severe birth defects in children infected in utero
  38. Roseola
    human herpes virus 6
  39. Warts
  40. Molluscum contagiosum
  41. Leishmaniasis
    caused by a protozoan, skin ulcers
  42. Ringworm
    caused by a fungus
  43. Pinkeye
    • conjunctivitis, may be viral, bacterial, or even protozoal, or animal
    • Common causes – Staphylococcus, Streptoccus, gonorrhea, Chlamydia, contact lenses
  44. Keratitis
    deep infection of eye, causes corneal ulcers
  45. River blindness
    caused by a helminth, Onchocerca volvus, spread by black flies.