Bacteriology - Mycobacteria Quiz

26 Questions | Total Attempts: 1299

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Bacteriology - Mycobacteria Quiz

Mycobacterium is a genus of Actinobacteria and comes from a group, which includes the causative agents for leprosy and tuberculosis. MTB is not classified as either Gram-positive or Gram-negative because it does not have the chemical characteristics of either. Take up the quiz below and see what you know about them.


Questions and Answers
  • 1. 
    Mycobacteria are motile and can produce spores
    • A. 

      True

    • B. 

      False

  • 2. 
    Mycobacteria are what?
    • A. 

      Thin, hook or slight bent cocci

    • B. 

      Thick, straight

    • C. 

      Thin, straight or slightly curved rods

  • 3. 
    Cell wall has a high what?
    • A. 

      Protein content

    • B. 

      Lipid content

    • C. 

      Glucose content

  • 4. 
    Mycobacteria resist decolorization with acid alcohol
    • A. 

      True

    • B. 

      False

  • 5. 
    Are mycobacteria strictly aerobic or anaerobic?
    • A. 

      Aerobic

    • B. 

      Anaerobic

  • 6. 
    Mycobacteria tend to do what compared to other pathogenic bacteria?
    • A. 

      Grow faster

    • B. 

      Grow slowly

  • 7. 
    Most rapidly growing species of mycobacteria will grow in less than how many days?
    • A. 

      14

    • B. 

      3

    • C. 

      7

  • 8. 
    Most rapidly growing species of mycobacteria grow at temperatures ______ degrees celsius
    • A. 

      10-30

    • B. 

      20-40

    • C. 

      40-60

  • 9. 
    Most mycobacteria associated with disease will grow in _______ weeks.
    • A. 

      2-6

    • B. 

      8-12

    • C. 

      1-4

  • 10. 
    M.leprae will not grow on artificial media
    • A. 

      True

    • B. 

      False

  • 11. 
    The Mycobacteria lab should be separated from the rest of the microbacteriology lab
    • A. 

      True

    • B. 

      False

  • 12. 
    Areas where specimens and cultures are processed should have _____  air pressure.
    • A. 

      Positive

    • B. 

      Negative

  • 13. 
    A biological safety cabinet is not essential for a mycobacteria lab.
    • A. 

      True

    • B. 

      False

  • 14. 
    UV light does what to bacteria?
    • A. 

      No effect

    • B. 

      Kills them

    • C. 

      Nurtures them

  • 15. 
    Mycobacteria  be cultured from a variety of clinical specimens, the most common being ______ specimens.
    • A. 

      Urinary

    • B. 

      Respiratory

    • C. 

      Stool

  • 16. 
    If immediate transport is not possible for Mycobacteria specimens what should be done?
    • A. 

      Refrigerate the specimens

    • B. 

      Leave them out in room temperature

    • C. 

      Place in an anaerobic jar

    • D. 

      Store in a incubator at 37 degrees celsius

  • 17. 
    Delay in specimen processing can lead to what?
    • A. 

      False negatives

    • B. 

      False positives

  • 18. 
    Swabs can be used for sputum specimens.
    • A. 

      True

    • B. 

      False

  • 19. 
    How many specimens of sputum is typically needed to make a diagnosis?
    • A. 

      3

    • B. 

      5

    • C. 

      2

    • D. 

      1

  • 20. 
    A volume of _____ ml sputum should be sent.
    • A. 

      5-10

    • B. 

      15-20

    • C. 

      20-30

    • D. 

      2-3

  • 21. 
    Gastric Aspirates are used primarily by
    • A. 

      Children < 3 years of age

    • B. 

      Nonambulatory people

    • C. 

      Those who cannot produce sputum by induction

    • D. 

      Those who can produce sputum by induction

  • 22. 
    Gastric aspirates are collected in the morning after an overnight fast. How many specimens are collected within 3 days?
    • A. 

      3

    • B. 

      1

    • C. 

      2

    • D. 

      4

  • 23. 
    Urine is usually used to diagnose Renal TB. First morning midstream specimen is preferred; minimum volume is ____ ml
    • A. 

      10

    • B. 

      5

    • C. 

      15

    • D. 

      20

  • 24. 
    No AF smear is performed with Urine specimens.
    • A. 

      True

    • B. 

      False

  • 25. 
    No AF smear is preformed with Stool specimens.
    • A. 

      True

    • B. 

      False

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