Microbiology #2

189 Questions | Total Attempts: 55

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Microbiology Quizzes & Trivia

Microbiology quiz for test #2


Questions and Answers
  • 1. 
    What is growth?
    • A. 

      Cell number of entire culture

    • B. 

      Cell number of individual colony

    • C. 

      Increase in the number of cells

    • D. 

      Size of the cells

  • 2. 
    What are the correct steps in Binary Fission?
    • A. 

      Chromosome Separates, Septum Forms, Cell Duplicates

    • B. 

      Cell Duplicates, Septum Forms, Chromosome Separates

    • C. 

      Septum Forms, Cell Duplicates, Chromosome Separate

    • D. 

      Septum Forms, Chromosomes Separates, Cell Duplicates

  • 3. 
    Process in which a small new cell develops from the surface of an existing cell and subsequently separates from the parent cell?
    • A. 

      Binary Fission

    • B. 

      Mitosis

    • C. 

      Budding

    • D. 

      Meiosis

  • 4. 
    Phase that is slow growing and builds ATP?
    • A. 

      Log Phase

    • B. 

      Stationary Phase

    • C. 

      Decline Phase

    • D. 

      Lag Phase

  • 5. 
    Phase that is exponential?
    • A. 

      Log Phase

    • B. 

      Lag Phase

    • C. 

      Stationary Phase

    • D. 

      Death Phase

  • 6. 
    Stage in which growth continues and the cell numbers level off?
    • A. 

      Lag Phase

    • B. 

      Stationary Phase

    • C. 

      Death Phase

    • D. 

      Log Phase

  • 7. 
    The phase which is logarithmic and the number of live cells decreases?
    • A. 

      Lag Phase

    • B. 

      Log Phase

    • C. 

      Death Phase

    • D. 

      Stationary Phase

  • 8. 
    What are some ways that we measure bacterial growth?
    • A. 

      Direct Microscopic Counts, Most Probable Number, Temperature, Oxygen Level, Filtration

    • B. 

      Oxygen level, Filtration, Counting the Cells, Turbidity

    • C. 

      Cloudiness, Amount of Growth on the top of the medium, Color of the growth, Thickness of the growth

    • D. 

      Standard Plate Counts, Direct Microscopic Counts, Most Probable Number, Filtration, Turbidity

  • 9. 
    Method in which we estimate with dilutions, mix & plate each, count colonies, and multiply by dilution factor?
    • A. 

      Serial Dilution/Standard Plate Counts

    • B. 

      Direct Microscopic Counts

    • C. 

      Most Probable Number

    • D. 

      Filtration

  • 10. 
    Method that uses a hemocytometer, has cells in liquid media & trypan blue for 5 minutes, and counts live and dead cells?
    • A. 

      Standard Plate Counts

    • B. 

      Direct Microscopic Counts

    • C. 

      Most Probable Number

    • D. 

      Filtration

  • 11. 
    Method normally used in food and water sanitation studies, has low counts, uses 3 dilutions in sets of 5, and pH?
    • A. 

      Turbidity

    • B. 

      Direct Microscopic Counts

    • C. 

      Most Probable Number

    • D. 

      Filtration

  • 12. 
    Method that uses pores to collect bacteria and then grows individual colonies on media?
    • A. 

      Turbidity

    • B. 

      Most Probable Number

    • C. 

      Direct Microscopic Counts

    • D. 

      Filtration

  • 13. 
    Method that views the cloudiness visualized resulting from growth?
    • A. 

      Turbidity

    • B. 

      Filtration

    • C. 

      Most Probable Number

    • D. 

      Serial Dilution

  • 14. 
    Which is not a physical factor affecting growth?
    • A. 

      Hydrogen

    • B. 

      Oxygen

    • C. 

      Moisture

    • D. 

      PH

  • 15. 
    What is the pH of Neutrophiles?
    • A. 

      5.4 - 8.0

    • B. 

      0.1 - 5.4

    • C. 

      7.0 - 11.5

    • D. 

      1.9 - 3.7

  • 16. 
    What is the pH of acidophiles?
    • A. 

      0.1 - 5.4

    • B. 

      5.4 - 8.0

    • C. 

      7.0 - 11.5

    • D. 

      3.1 - 9.6

  • 17. 
    What is the pH of alkaliphiles?
    • A. 

      7.0 - 11.5

    • B. 

      0.1 - 5.4

    • C. 

      5.4 - 8.0

    • D. 

      1.0 - 3.7

  • 18. 
    What type of temperature do psychrophiles thrive in?
    • A. 

      15 - 20 C

    • B. 

      25 - 40 C

    • C. 

      50 - 60 C

    • D. 

      70 - 90 C

  • 19. 
    What type of temperatures do Mesophiles thrive in?
    • A. 

      25 - 40 C

    • B. 

      15 - 20 C

    • C. 

      50 - 60 C

    • D. 

      70 - 80 C

  • 20. 
    Which is an example of an obligate aerobe?
    • A. 

      Pseudomonas

    • B. 

      Tetani

    • C. 

      Botulinum

    • D. 

      Bacteroides

  • 21. 
    Which is an example of an obligate anaerobe?
    • A. 

      Botulinum

    • B. 

      Pseudomonas

    • C. 

      Staph

    • D. 

      Coccus

  • 22. 
    Moisture requires the presence of what?
    • A. 

      H20

    • B. 

      Oxygen

    • C. 

      Hydrogen

    • D. 

      Helium

  • 23. 
    What maintains enzyme conformation?
    • A. 

      Osmotic Pressure

    • B. 

      Hydrostatic Pressure

    • C. 

      Radiation

    • D. 

      Temperature

  • 24. 
    What prevents dehydration and rupture and is a common feature of halophiles?
    • A. 

      Hydrostatic Pressure

    • B. 

      Osmotic Pressure

    • C. 

      Oxygen

    • D. 

      Temperature

  • 25. 
    _____________ and ___________ are two types of radiation and they can cause _______ mutations?