Mlsp 5112 Micro - Spirochetes

22 Questions | Total Attempts: 109

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Mlsp 5112 Micro - Spirochetes

Questions and Answers
  • 1. 
    Which are general characteristics of Leptospira?
    • A. 

      Short tight spirals

    • B. 

      Easy to identify

    • C. 

      Requires dark field microscopy

    • D. 

      Answers 1 and 3

    • E. 

      All of the above

  • 2. 
    Leptospirosis is common in rats and can infect humans by coming into contact with infected urine.
    • A. 

      True

    • B. 

      False

  • 3. 
    Which is a complication of Leptospirosis and what can prevent it?
    • A. 

      Weil's disease, frequent hand washing

    • B. 

      Jarisch-Herxheimer reaction, low dose antibiotics

    • C. 

      Weil's disease, low dose antibiotics

    • D. 

      Jarisch-Herxheimer, no way to prevent

  • 4. 
    What media is used to culture Leptospira?
    • A. 

      Middlebrook media

    • B. 

      PPLO broth

    • C. 

      Fletcher's semi-solid media

    • D. 

      Cell culture

  • 5. 
    When doing serological testing of Leptospira, it is important to use killed organism as it is more sensitive than live organism.
    • A. 

      True

    • B. 

      False

  • 6. 
    How is Borrelia transferred?
    • A. 

      Via lice or tick

    • B. 

      Via mucous membranes

    • C. 

      Via bodily fluids

  • 7. 
    Which organism(s) cause Relapsing Fever?
    • A. 

      Borrelia recurrentis

    • B. 

      Borrelia hermsii

    • C. 

      Borrelia burgdorferi

    • D. 

      Answers 1 and 2

    • E. 

      All of the above

  • 8. 
    What causes the recurrent fever episodes in Relapsing Fever?
    • A. 

      New infections

    • B. 

      Neutrophil reaction

    • C. 

      Eosinophilic reaction

    • D. 

      Antigenic variation of surface proteins

  • 9. 
    What antibiotic(s) are used to treat Relapsing Fever?
    • A. 

      Amoxicillin

    • B. 

      Erythromycin

    • C. 

      Cephalosporin

    • D. 

      Tetracycline

  • 10. 
    The adult Ixodes tick has the best transmission rates for Lyme Disease.
    • A. 

      True

    • B. 

      False

  • 11. 
    OspA is an important protein for B.burgdorferi and the pathogenesis of Lyme Disease.
    • A. 

      True

    • B. 

      False

  • 12. 
    Culture of B.burgdorferi is the primary method of identification in the laboratory.
    • A. 

      True

    • B. 

      False

  • 13. 
    Which organism causes Syphilis.
    • A. 

      T. pertenue

    • B. 

      T. pallidum

    • C. 

      T. carateum

  • 14. 
    Which phase(s) are associated with transplacental transfer of syphilis?
    • A. 

      Primary phase

    • B. 

      Secondary phase

    • C. 

      Tertiary phase

  • 15. 
    Non-trepanemal serologic testing non-specific and is used as a screening test whereas trepanemal is specific and confirmatory.
    • A. 

      True

    • B. 

      False

  • 16. 
    Why can't oral samples be used for direct microscopic examination for syphilis?
    • A. 

      Organism does not live in oral habitats

    • B. 

      Organism is anaerobic

    • C. 

      Contains normal flora treponemes

    • D. 

      All of the above

  • 17. 
    A single dose of penicillin is sufficient to treat a syphilis infection.
    • A. 

      True, infection

    • B. 

      True, infection >1 year

  • 18. 
    Which of the below are associated with Rat-bite fever.
    • A. 

      Short, thick, tightly coiled spirals

    • B. 

      Common in USA

    • C. 

      Not culturable

    • D. 

      Caused by Spirillium minor

    • E. 

      No serologic testing available

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