Microbiology Exam Review Quiz Dec 2012

131 Questions | Total Attempts: 53

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Microbiology Exam Review Quiz Dec 2012

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Questions and Answers
  • 1. 
    What media is used to culture T.pallidum?
  • 2. 
    What is the purpose of the axial filaments of spirochetes such as Treponema pallidum and Borrelia spp.?
  • 3. 
    Which type of microscopy is most commonly used in the direct microscopic examination of T.pallidum?
    • A. 

      Brightfield Microscopy

    • B. 

      Darkfield Microscopy

    • C. 

      Phase Contrast Microscopy

    • D. 

      Fluorescence Microscopy

    • E. 

      Electron Microscopy

  • 4. 
    The spirochetes are gram negative microorganisms.
    • A. 

      True

    • B. 

      False

  • 5. 
    T.pallidum has a _________________ motility that can be used for laboratory diagnosis.
  • 6. 
    Identification of the causative agent of syphilis is most commonly achieved using:
    • A. 

      Culture

    • B. 

      Biochemical testing

    • C. 

      Antigen detection

    • D. 

      Serology

    • E. 

      PCR

  • 7. 
    The screening test used in the diagnosis of secondary and tertiary syphilis attempts to detect antibodies to ________________ whereas the specific test attempts to detect antibodies to ___________________.
  • 8. 
    Borrelia burgdorferi is the etiologic agent of ____________________.
  • 9. 
    The transmission of B.Burgdorferi is mediated by:
    • A. 

      Aerosols

    • B. 

      Direct contact

    • C. 

      Vectors

    • D. 

      Fomites

    • E. 

      Vehicles

  • 10. 
    What organs are most commonly affected during the progression of Lyme Disease?
    • A. 

      Skin

    • B. 

      Blood vessles

    • C. 

      Brain

    • D. 

      Heart

    • E. 

      Joints

    • F. 

      Pancreas

    • G. 

      Stomach

    • H. 

      Appendix

  • 11. 
    The laboratory diagnosis of Lyme Disease is most commonly made using _____________.
  • 12. 
    Name two species of Borrelia that are most commonly implicated in cases of relapsing fever. What are the vectors involved in the transmission of these species of Borrelia?
  • 13. 
    What organs are most commonly affected during severe cases of Leptospirosis?
    • A. 

      Kidneys

    • B. 

      Heart

    • C. 

      Liver

    • D. 

      Central Nervous System

    • E. 

      Lungs

    • F. 

      Skin

  • 14. 
    The transmission of leptospires is most commonly via _________________________
  • 15. 
    Identification of the causative agent of leptospirosis is most commonly achieved using:
    • A. 

      PCR

    • B. 

      Biochemical testing

    • C. 

      Culture

    • D. 

      Serology

    • E. 

      Antigen detection

  • 16. 
    Ticks transmit the spirochetes that cause Lyme disease within the first hour after attaching to their human host.
    • A. 

      True

    • B. 

      False

  • 17. 
    Spirochetes are differentiated by the number of insertion disks present.
    • A. 

      True

    • B. 

      False

  • 18. 
    Several treponeme species are considered to be normal oral and genital flora.
    • A. 

      True

    • B. 

      False

  • 19. 
    A positive ELISA test for Lyme disease should be confirmed by Western blot.
    • A. 

      True

    • B. 

      False

  • 20. 
    Diagnosis of leptospirosis is usually made by detection of IgM antibodies in acute and convalescent sera.
    • A. 

      True

    • B. 

      False

  • 21. 
    Treponemes can infect the umbilical cord and cross the placenta.
    • A. 

      True

    • B. 

      False

  • 22. 
    Reaginic antibodies are produced against antigens of T.pallidum.
    • A. 

      True

    • B. 

      False

  • 23. 
    Extreme water sports are a risk factor for leptospirosis.
    • A. 

      True

    • B. 

      False

  • 24. 
    Human relapsing fever is caused by the bite of the human body louse.
    • A. 

      True

    • B. 

      False

  • 25. 
    Susceptibility testing of Borrelia spp. to doxycycline should always be done because of the incidence of treatment failure.
    • A. 

      True

    • B. 

      False

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