Micro Practice Practical For Perryman Lab

25 Questions | Total Attempts: 44

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Laboratory Quizzes & Trivia

Feel free to take this mock exam as many times as you would like. *Remember this Exam is for fun and to review your knowledge. It will in no way effect your final grade, and should not be used as a substitute for studying. *


Questions and Answers
  • 1. 
    What enzyme hydrolyzes the substrate deoxyribonucleic acid?
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 2. 
    Many Bacteria and Fungi Produce what that they release into their enviroment?
  • 3. 
    What enzyme hydrolyzes the substrate starch?
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 4. 
    What enzyme hydrolyzes the substrate gelatin?
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 5. 
    What enzyme hydrolyzes the casein protein?
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 6. 
    What enzyme hydrolyzes the breakdown of tributyrin?
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 7. 
    Startch Hydrolysis can be tested with
    • A. 

      The IMViC series.

    • B. 

      A starch agar plate.

    • C. 

      A DNA agar plate.

    • D. 

      A Gram Stain.

    • E. 

      A tube of gelatin agar, and Gram's iodine.

  • 8. 
    Gram's Iodine is added to media after incubation to determine the presence of DNase. 
    • A. 

      True

    • B. 

      False

  • 9. 
    DNA Hydrolysis can be tested with
    • A. 

      The IMViC series.

    • B. 

      A starch agar plate.

    • C. 

      A DNA agar plate.

    • D. 

      A Gram Stain.

    • E. 

      A tube of gelatin agar, and Gram's iodine.

  • 10. 
    After adding Gram's Iodine starch agar turns purple unless there is a presence of this enzyme
    • A. 

      Amylase

    • B. 

      DNase

    • C. 

      Collagenase

    • D. 

      Caseinase

    • E. 

      Lipase

  • 11. 
    After innoculating an organism in Starch agar and adding Gram's Iodine, if the organism has a presence of amylase the starch agar will turn what color?
    • A. 

      Purple

    • B. 

      Red

    • C. 

      Yellow

    • D. 

      Metallic Green

    • E. 

      None of the others

  • 12. 
    If you are innoculating as organism that has a presence of DNase in DNA agar, the agar will turn what color?
    • A. 

      Off white

    • B. 

      Pale Green

    • C. 

      Methyl Green

    • D. 

      Metallic Green

    • E. 

      Clear

  • 13. 
    After Innoculating in DNA agar, if the agar is methly green around the organism, the results are?
    • A. 

      Positive

    • B. 

      Negative

    • C. 

      Contaminated

    • D. 

      False Positive

  • 14. 
    After Innoculating in Starch agar, and adding Gram's Iodine, if the agar is clear around the organism, the results are?
    • A. 

      Positive

    • B. 

      Negative

    • C. 

      Contaminated

    • D. 

      False Positive

  • 15. 
    Starch agars is a Selective Media.
    • A. 

      True

    • B. 

      False

  • 16. 
    In Gelatin Hydrolosis if the organism and media become liquid this means that the organism is positive for Collagenase.
    • A. 

      True

    • B. 

      False

  • 17. 
    After Innoculation, Serratia marcescens...
    • A. 

      Has a red pigment.

    • B. 

      Has a metallic green sheen color.

    • C. 

      Resembles a black caterpillar.

    • D. 

      Must have phenol red dye added to it to see it.

  • 18. 
    Collagenase can be detected by use of Gelatin agar.
    • A. 

      True

    • B. 

      False

  • 19. 
    Can any organism grow in differential media?
    • A. 

      Yes

    • B. 

      No

  • 20. 
    PEA is selective for what Gram___________ Organisms
    • A. 

      Positive

    • B. 

      Negative

  • 21. 
    EMB is selective for what Gram___________ Organisms
    • A. 

      Positive

    • B. 

      Negative

  • 22. 
    PEA containes
    • A. 

      Phenylethyl alcohol

    • B. 

      Phenol red

    • C. 

      Potassium eosin acids

    • D. 

      Eosin and methylene blue

  • 23. 
    EMB containes
    • A. 

      Phenylethyl alcohol

    • B. 

      Phenol red

    • C. 

      Potassium eosin acids

    • D. 

      Eosin and methylene blue

  • 24. 
    Which media is not only selective but differental as well?
    • A. 

      PEA

    • B. 

      EMB

    • C. 

      PIE

    • D. 

      ERA

  • 25. 
    If an organism has growth on a PEA plate it is
    • A. 

      Gram Positive

    • B. 

      Gram Negative

    • C. 

      Staphylococcus

    • D. 

      Streptococcus