Mycoplasma And Ureaplasma

18 Questions

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Bacteria Quizzes & Trivia

Questions and Answers
  • 1. 
    Mycoplasmas are pleomorphic organisms that have a cell wall.
    • A. 

      True

    • B. 

      False

  • 2. 
    Why are Mycoplasma resistant to antibiotics such as penicillin and cephalosporins?
    • A. 

      Their endotoxins makes them resistant

    • B. 

      Their lack of a cell wall make them resistant

    • C. 

      Their motility makes them resistant

  • 3. 
    Mycoplasma grows _____ and are highly fastidious, facultative anerobes.
    • A. 

      Rapidly

    • B. 

      Slowly

  • 4. 
    Mycoplasma need complex media contain _______ and _______ for growth.
    • A. 

      Blood and hemolysin

    • B. 

      Glucose and galactose

    • C. 

      Cholesterol and fatty acids

  • 5. 
    Mycoplasma species grow embedded _____ the surface of the solid media.
    • A. 

      Over

    • B. 

      Beneath

  • 6. 
    On solid media, some species of Mycoplasma form colonies with a slightly raised center giving a "_______" appearance.
    • A. 

      Clown

    • B. 

      Valley-like

    • C. 

      Fried egg

    • D. 

      Wrinkled

  • 7. 
    M. hominis is found in the lower genitourinary tract of about half of healthy adults; not a cause of __________.
    • A. 

      PKU

    • B. 

      REG

    • C. 

      NGU

  • 8. 
    Since mycoplasma organisms lack a ______, they will not stain with Gram stain.
    • A. 

      Vacuole

    • B. 

      Granules

    • C. 

      Cytoplasm

    • D. 

      Cell wall

  • 9. 
    A DNA fluorescent stain using (acridine ________) can be used but this is not specific.
    • A. 

      Red

    • B. 

      Blue

    • C. 

      Orange

    • D. 

      White

  • 10. 
    M. penumoniae requires what substrate to grow in culture?
    • A. 

      Glucose

    • B. 

      Arginine

    • C. 

      Urea and media with a pH near 6.0

  • 11. 
    Mycoplasma hominis  requires what substrate to grow in culture?
    • A. 

      Glucose

    • B. 

      Arginine

    • C. 

      Urea and media with a pH near 6.0

  • 12. 
    Ureaplasma species  requires what substrate to grow in culture?
    • A. 

      Glucose

    • B. 

      Arginine

    • C. 

      Urea and media with a pH near 6.0

  • 13. 
    What is the major way M. pneumoniae is diagnosed?
    • A. 

      PCR

    • B. 

      Serology

  • 14. 
    What would be the best way to make a diagnosis of Mycoplasma pneumoniae?
    • A. 

      Collect two specimens 2-3 weeks apart

    • B. 

      Collect one specimens 1 week apart

    • C. 

      Collected three specimens 2-3 weeks apart

    • D. 

      Collect two specimens 7 days apart

  • 15. 
    Cold agglutininins is a sensitive and specific for Mycoplasma pneumoniae.
    • A. 

      True

    • B. 

      False

  • 16. 
    Most reference labs utilize the ______ fixation technique for the presence of antibodies.
    • A. 

      Immuno-fluorescence

    • B. 

      Radio-isotope

    • C. 

      Complement

  • 17. 
    Due to the absence of a cell wall, Mycoplasma organisms are resistant to all Beta lactam antibiotics.
    • A. 

      True

    • B. 

      False

  • 18. 
    Mycoplasma pneumoniae remain susceptible to _______, newer quinolones and macrolides are used.
    • A. 

      Tetracycline

    • B. 

      Penicillin

    • C. 

      Beta lactam