Microbiology Competency_weeks_2012

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    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.

    • True
    • False
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About This Quiz

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

Microbiology Quizzes & Trivia

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  • 2. 

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

    • E. coli

    • Neisseria meningococcus

    • Haemophilus influenza

    • Staph aureus

    Correct Answer
    A. Neisseria meningococcus
  • 3. 

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

    • Staph species

    • Strep species

    • Brucella species

    • Enterobacteriaceae

    Correct Answer
    A. Staph species
  • 4. 

    The most common use of the Catalase test is to:

    • Presumptively identify yeast

    • Distinguish between Staph and Strep species

    • To test for Protein A

    • To test for X and V factors

    Correct Answer
    A. Distinguish between Staph and Strep species
  • 5. 

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

    • True

    • False

    Correct Answer
    A. False
  • 6. 

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

    • Set the culture up

    • Notify the appropriate clinician and request a new specimen

    • Throw the sample away and don't tell anyone

    • Go yell at the nurse for sending you spit

    Correct Answer
    A. Notify the appropriate clinician and request a new specimen
  • 7. 

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

    • Salmonella

    • Shigella

    • Campylobacter

    • E. coli

    Correct Answer
    A. Salmonella
  • 8. 

    Which statements are true of Beta lactamases? Check all that apply

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

    • Testing for Beta lactamase is not a very useful test

    • 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

    • Beta lactamase test detects indole production

    Correct Answer(s)
    A. Beta lactamases are enzymes produced by certain bacteria that are able to inactivate Beta lactam antibiotics (phnicillins and cephalosporins)
    A. 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
  • 9. 

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

    • Unlabeled specimen

    • Leaky container

    • Wound culture submitted in a culturette containine Modified Ames Stuart media

    • Urine specimen delayed transport of 4 hours

    • Properly collected clean catch urine delivered immediately to the lab

    • A dry swab

    Correct Answer(s)
    A. Unlabeled specimen
    A. Leaky container
    A. Urine specimen delayed transport of 4 hours
    A. A dry swab
  • 10. 

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

    • Salmonella

    • Campylobacter

    • Shigella

    • E. coli

    Correct Answer
    A. Shigella
  • 11. 

    The following organisms are considered possible Bioterrorism organism. Check all that apply.

    • Bacillus anthracis

    • Staph aureus

    • Yersinia pestis

    • Strep pneumo

    • Francisella tularensis

    • E. coli

    • Brucella species

    Correct Answer(s)
    A. Bacillus anthracis
    A. Yersinia pestis
    A. Francisella tularensis
    A. Brucella species
  • 12. 

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

    • E. coli

    • Pseudomonas

    • Campylobacter

    • Klebsiella

    Correct Answer(s)
    A. Pseudomonas
    A. Campylobacter

Quiz Review Timeline (Updated): Feb 22, 2013 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Feb 22, 2013
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 13, 2012
    Quiz Created by
    Ylorily
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