UMMC Micro test2 6th

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Author:
sullydog101
ID:
176224
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UMMC Micro test2 6th
Updated:
2012-10-08 11:01:39
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UMMC Micro test2 6th
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UMMC Micro test2 6th
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  1. What is it called when a non-pathogenic bacteria infects and replicates but does not cause harm?
    Sub-clinical infection
  2. What are the four parts of Koch’s postulates?
    • All cases must have the organism and it is not in healthy people
    • The organism must be grown in pure culture
    • Must use pure culture to cause experimental infection
    • Must isolate the organism In pure culture from experimentally infected animal
  3. Define Incubation period
    Time from acquisition of the organisms to the start of symptoms
  4. Define prodromal period
    the time during which there are non-specific symptoms, but can spread bug
  5. Define Acute illness
    when specific signs and symptoms of the disease are present
  6. Define recovery period
    the time during which the illness subsides and patient returns to health
  7. What are hospital acquired infections?
    Nosocomial
  8. What is a healthy person who has an exogenous pathogen living in his flora?
    Carrier
  9. How does cranberry juice prevent UTI?
    Cranberry juice has di-galactose which bacteria preferentially bind
  10. What is the difference between LOS and LPS?
    LOS has a shorter O side chain
  11. What receptors does Endotoxin bind?
    CD14 and TL4
  12. Where is LPS located?
    Part of the outer membrane
  13. What are the three components of LPS?
    • Lipid A
    • core carbohydrate (KDO)
    • O-side chain
  14. What is the difference between smooth and rough gram negative bacteria?
    Rough bacteria lack the O-side chain
  15. What antigens are associated with LPS?
    R and O antigens

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