Quiz: Microbiology MCQ Trivia Questions!

20 Questions | Total Attempts: 4721

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Quiz: Microbiology MCQ Trivia Questions!

The study of microbiology deals with the many different organisms that we are typically unable to see with the naked eye due to how small they are – i. E. They can only truly be identified and analyzed with a microscope. In the following quiz, we’re going to test your knowledge on these organisms by offering you a multiple-choice quiz on the topic. Think you know your stuff? Let’s find out.


Questions and Answers
  • 1. 
    Which of the following media is used for culturing Salmonella?
    • A. 

      VL-broth

    • B. 

      Sabouraud agar

    • C. 

      Slanetz Bartley

    • D. 

      Selenite Broth

  • 2. 
    Arabinose is a test-tube test used for:
    • A. 

      Enterococci

    • B. 

      Salmonella

    • C. 

      G- bacteria

    • D. 

      Neisseriae

  • 3. 
    Choose the incorrect statement about Endo agar:
    • A. 

      Only some G+ bacteria can grow on it selectively

    • B. 

      Can be used to differentiate lactose fermentation

    • C. 

      Is similar to McConkey medium

    • D. 

      Combines selective and diagnostic properties

  • 4. 
    Choose the correct statement about Antigen detection:
    • A. 

      It is an indirect method

    • B. 

      Negative result means presence of microbe in the patient’s body

    • C. 

      It is carried out in the laboratory using antibodies of animal origin

    • D. 

      Uses a sample of patients saliva

  • 5. 
    The third phase of the PCR reaction involves:
    • A. 

      Detection of amplification product

    • B. 

      Amplification of DNA

    • C. 

      Breakdown of DNA

    • D. 

      Obtaining isolated DNA

  • 6. 
    Chocolat agar is an example of a pure enriched medium used for culturing:
    • A. 

      Streptococci

    • B. 

      Hemophili

    • C. 

      Enterococci

    • D. 

      Fungi

  • 7. 
    When using Hanja medium, if the colour of the whole medium is yellow it means:
    • A. 

      Formation of H2S

    • B. 

      Bacterium is not a glucose fermenter

    • C. 

      Bacterium is a lactose fermenter

    • D. 

      Bacterium is not a lactose fermenter

  • 8. 
    Optochin is used to test:
    • A. 

      Lactose fermentation

    • B. 

      Motility

    • C. 

      Glucose fermentation

    • D. 

      Antibiotic susceptibility

  • 9. 
    Löwentein-Jensen medium is used for culturing:
    • A. 

      Enterobacteria

    • B. 

      Tuberculosis

    • C. 

      Salmonella

    • D. 

      G+ bacteria

  • 10. 
    Arabinose is a test-tube test used for:
    • A. 

      Salmonella

    • B. 

      Neisseriae

    • C. 

      Enterococci

    • D. 

      G- bacteria

  • 11. 
    Choose the incorrect statement about E-tests
    • A. 

      The testing strip has a rising Atb concentration

    • B. 

      The test is qualitative

    • C. 

      The strip has a scale

    • D. 

      Principally similar to diffusion disc test

  • 12. 
    The MIC Value is:
    • A. 

      The highest concentration that inhibits growth

    • B. 

      The highest concentration that allows growth

    • C. 

      The lowest concentration that inhibits growth

    • D. 

      The lowest concentration that inhibits growth

  • 13. 
    In microdilution testing, if MIC Value > breakpoint;
    • A. 

      Strain is suceptible

    • B. 

      Strain is resistant

    • C. 

      A different test is needed

    • D. 

      None of the answers are correct

  • 14. 
    Haemagluttination Inhibition Test:
    • A. 

      Is not an agglutination reaction

    • B. 

      Is a neutralisation reaction

    • C. 

      Result with a dense round target is positive

    • D. 

      All answers are correct

  • 15. 
    Choose the correct statement about ASO:
    • A. 

      Is a direct diagnostics reaction

    • B. 

      The aim is to find a pathogen

    • C. 

      ASO examination is indicated in rheumatoid fever

    • D. 

      All of the answers are correct

  • 16. 
    Which of the following is NOT considered a classification of PCR:
    • A. 

      Specific PCR

    • B. 

      Multiplex PCR

    • C. 

      Universal PCR

    • D. 

      Segmental PCR

  • 17. 
    In the first phase of PCR reaction:
    • A. 

      We have to find isolated DNA

    • B. 

      Product is initially detected

    • C. 

      We have to amplify the DNA

    • D. 

      None of the answers are correct

  • 18. 
    Catalase test is used for:
    • A. 

      Diagnostics of G+ cocci

    • B. 

      Diagnostics of G+ rods

    • C. 

      Uses hydrogen peroxide

    • D. 

      All answers are correct

  • 19. 
    Indol test positivity is indicated by presence of:
    • A. 

      A red ring

    • B. 

      Colour change to yellow

    • C. 

      Colour change to blue

    • D. 

      Increased turbidity

  • 20. 
    Octal codes are used in:
    • A. 

      MIU test

    • B. 

      Optochin test

    • C. 

      Plate tests

    • D. 

      Catalase test