Microbiology Competency_weeks_2012

12 Questions | Total Attempts: 109

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Microbiology Quizzes & Trivia

This quiz is designed to test the basic competencies in Microbiology for a small hospital lab.


Questions and Answers
  • 1. 
    The following organisms are considered possible Bioterrorism organism. Check all that apply.
    • A. 

      Bacillus anthracis

    • B. 

      Staph aureus

    • C. 

      Yersinia pestis

    • D. 

      Strep pneumo

    • E. 

      Francisella tularensis

    • F. 

      E. coli

    • G. 

      Brucella species

  • 2. 
    Universal precautions are only necessary when handling specimens that have contamination on the outside of the container.
    • A. 

      True

    • B. 

      False

  • 3. 
    Check any of the following that are appropriate reasons for rejecting a specimen for microbiology.
    • A. 

      Unlabeled specimen

    • B. 

      Leaky container

    • C. 

      Wound culture submitted in a culturette containine Modified Ames Stuart media

    • D. 

      Urine specimen delayed transport of 4 hours

    • E. 

      Properly collected clean catch urine delivered immediately to the lab

    • F. 

      A dry swab

  • 4. 
    Intracellular gram-negative dipplococci seen on a gram stain of CSF would be suspicious of what organism?
    • A. 

      E. coli

    • B. 

      Neisseria meningococcus

    • C. 

      Haemophilus influenza

    • D. 

      Staph aureus

  • 5. 
    Grape-like clusters of gram positive cocci seen on a gram stain would be suspect of which organism?
    • A. 

      Staph species

    • B. 

      Strep species

    • C. 

      Brucella species

    • D. 

      Enterobacteriaceae

  • 6. 
    A colorless/clear colony growing on XLD agar should be worked up for which of the following enteric pathogen?
    • A. 

      Salmonella

    • B. 

      Campylobacter

    • C. 

      Shigella

    • D. 

      E. coli

  • 7. 
    A black colony found growing on XLD agar should be worked up for which of the following enteric pathogens?
    • A. 

      Salmonella

    • B. 

      Shigella

    • C. 

      Campylobacter

    • D. 

      E. coli

  • 8. 
    A clean catch urine sample is growing >100,000 of a single type gram negative rod. This culture should be worked up as positive and the organism should be identified and sensitivities performed.
    • A. 

      True

    • B. 

      False

  • 9. 
    A sputum specimen is received and the gram stain is showing >25 squamous epithelials per low power field. What is the appropriate next step?
    • A. 

      Set the culture up

    • B. 

      Notify the appropriate clinician and request a new specimen

    • C. 

      Throw the sample away and don't tell anyone

    • D. 

      Go yell at the nurse for sending you spit

  • 10. 
    The most common use of the Catalase test is to:
    • A. 

      Presumptively identify yeast

    • B. 

      Distinguish between Staph and Strep species

    • C. 

      To test for Protein A

    • D. 

      To test for X and V factors

  • 11. 
    The Oxidase test is useful in initial characterization of gram negative bacteria. Which of the following would be Oxidase positive?
    • A. 

      E. coli

    • B. 

      Pseudomonas

    • C. 

      Campylobacter

    • D. 

      Klebsiella

  • 12. 
    Which statements are true of Beta lactamases? Check all that apply
    • A. 

      Beta lactamases are enzymes produced by certain bacteria that are able to inactivate Beta lactam antibiotics (phnicillins and cephalosporins)

    • B. 

      Testing for Beta lactamase is not a very useful test

    • C. 

      Direct Beta lactamase testing can be used as a rapid and effective method of detecting resistance to beta lactam antibiotics in strains of Staph.aureus, Haemophilus influenza, Neisseria gonorrhea and Moraxella catarrhalis

    • D. 

      Beta lactamase test detects indole production