Microbiology chpt 13-19 test review

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Microbiology chpt 13-19 test review
2013-11-26 18:38:04
Microbiology chapter 13 19 Claudia Sellers

Microbiology chapter 13-19 Claudia Sellers
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  1. Innate Immunity
    nonspecific & and present at birth
  2. normal microbiota provide protection from infectionin each of the following ways EXCEPT
    they produce lysozyme (saliva, tears, mucosal secretions not produced by microbiota)
  3. A chill is a sign that
    body temp is rising
  4. Which of the following blows a hole in parasitic helminths
  5. Lysozyme & the antibiotic penicillin have similar mechanisms of action in theat they both cause damge to the bacterial
    cell wall
  6. What type of immunity results from vaccinations?
    artificially acquired active immunity
  7. The specificity of an antibody is due to
    variable portions of the H&L chains
  8. The most abundant class of antibodies in serum is
  9. Which of the following destroys virus-infected cells
    CTL (Tc)
  10. Why don't you get sick from the same thing twice if your immune system is working properly?
    memory cells
  11. All of the following are generally used in vaccines EXCEPT
    • antibodies
    • (used are toxoids; parts of bacterial cells; live, attenuated bacteria; inactivated viruses)
  12. What type of vaccine is the live measles virus
    attenuated whole-agent vaccine
  13. A test used to detect anti-Rckettsia antibodies in a pat's serum is the
    indirect flourescent-antibody test
  14. Which item is from the patient in a direct ELISA test
  15. How do all viruses differ from bacteria
    viruses are not compsed of cells
  16. A viroid is an
    infectious piece of RNA w/out a capsid
  17. Which of the following statements is NOT true of lysogeny
    It causes lysis of host cells (can in cases when it swetches back to a lytic cycle)
  18. A commensal bacterium
    does not receive any benefit from its host
  19. The major significance of Robert Koch's work is that
    microoganisms cause disease
  20. Which of the following statements about nosocomial infections is FALSE
    patient was infected before hospitalization
  21. Which of the following diseases is NOT spread by droplet infection
  22. Which of the following is a fomite
    hypodermic needle
  23. If a prodromal period exists for a certain disease, it should occur prior to
  24. Transient microbiota differ from normal microiota in that transient microbiota
    present for a relatively short time
  25. The ability of microbes, such as Trypanosoma/Giardia to alter their surface molecules & evade destruction by the host's antibodies are called
    antigenic variation
  26. the ID50 is
    the dose that will cause an infection in 50% of the test population
  27. endotoxins are
    part of the gram-negative cell wall
  28. all of the following are examples of entry via the parenteral route EXCEPT
    • hair follicle
    • (part of parenteral route are injection, bite, surgery, skin cut)
  29. antibiotic can lead to septic shock if used to treat
    gram-negative bacterial infections (will lyse cell releaseing a storm of toxins)
  30. All of the following are true of hypersensitivity EXCEPT
    it occurs when an individual is exposed to an alleren for the first time. (it is due to an altered immune response b/c previous exposure to an antigen.
  31. which of the following types of tranplant is least compatible
  32. a positive TB skin test is an example of
    delayed cell-mediated immunity
  33. Hemolytic disease of the newborn can result from an
    Rh neg mother and a Rh pos baby
  34. HIV spikes attache to CD4+ receptors found on
    T helper cells, macrophages, & dendritic cells
  35. which of the following describes a cytotoxic autoimmune reaction
    antibodies react to cell-surface antigens