Trivia Quiz: Microbiology MCQ Exam!

22 Questions | Total Attempts: 228

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Trivia Quiz: Microbiology MCQ Exam!

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Questions and Answers
  • 1. 
    Which phase shows the reproduction rate equal to the equivalent death rate?
    • A. 

      Log phase

    • B. 

      Stationary phase

    • C. 

      Death phase

    • D. 

      Lag 

  • 2. 
    The portion of the growth curve where rapid growth of bacteria is observed is known as:
    • A. 

      Lag

    • B. 

      Log

    • C. 

      Death

    • D. 

      Stationary

  • 3. 
    Growth is defined as an increase in cellular constituents and may result in an increase in a microorganism’s size, population number, or both.
    • A. 

      True

    • B. 

      False

  • 4. 
    Aerotolerant anaerobes are microorganisms that grow equally well whether or not oxygen is present.
    • A. 

      True

    • B. 

      False

  • 5. 
    Barotolerant is an organism that can grow and reproduce at high pressure but do not require them.
    • A. 

      True

    • B. 

      False

  • 6. 
    Extremophiles are microorganisms that grow under harsh or extreme environmental conditions.
    • A. 

      True

    • B. 

      False

  • 7. 
    Generation time is the time required for a microbial population to double in size.
    • A. 

      True

    • B. 

      False

  • 8. 
    An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is a(n)
    • A. 

      Osmotolerant

    • B. 

      Acidophile

    • C. 

      Neutrophile

    • D. 

      Alkalophile

  • 9. 
    The term obligate anaerobe refers to an organism that:
    • A. 

      Doesn't use oxygen but tolerates it.

    • B. 

      Is killed by oxygen

    • C. 

      Prefers to grow without oxygen

  • 10. 
    In a gram-negative organism, how do small molecules move into the periplasm from outside of the cell? 
    • A. 

      They diffuse freely through the peptidoglycan layer 

    • B. 

      They pass through porins

    • C. 

      Via binary fission

    • D. 

      They are transported by lipid A 

  • 11. 
    The use of sterile techniques and agar media-enabled early microbiologists to:
    • A. 

      Study pure cultures 

    • B. 

      Study mixed cultures 

    • C. 

       study agar-metabolizing cultures 

  • 12. 
    Will not use oxygen, but it wont kill them. This is an.
    • A. 

      Obligate aerobe

    • B. 

      Obligate anaerobe

    • C. 

      Aerotolerant anaerobes

    • D. 

      Facultative anaerobe

  • 13. 
    Which are the only two types of bacteria that humans come into contact with normally?
    • A. 

      Thermophiles and Psychrophiles

    • B. 

      Extreme thermophiles and Psychrotrophs

    • C. 

      Mesophiles and Psychrotrophs 

    • D. 

      Thermophiles and Extreme thermophiles 

  • 14. 
    Need oxygen, but only will grow under low oxygen concentrations (soil, water)
    • A. 

      Obligate aerobe

    • B. 

      Aerotolerant anaerobes

    • C. 

      Obligate anaerobe

    • D. 

      Microaerophiles

  • 15. 
    Bacteria divide by which of the following?
    • A. 

      Sexual reproduction

    • B. 

      Budding

    • C. 

      Binary Fission

    • D. 

      None

  • 16. 
    Which of the following is NOT a component of bacterial flagella?
    • A. 

       flagellin

    • B. 

      Basal body

    • C. 

      Tubulin

  • 17. 
    Bacterial pili can be described as
    • A. 

      Composed of tubulin

    • B. 

      Solid, rigid protein structures

    • C. 

      Composed of peptidoglycan

    • D. 

      Specialized fimbriae

  • 18. 
    Lipid A is also known as?
    • A. 

      Endotoxin

    • B. 

      Teichoic acid

    • C. 

      Tetrapeptide

    • D. 

      Mycolic acid

  • 19. 
    One lipid found in eukaryotes but NOT in prokaryotes is
    • A. 

      Hopanoid

    • B. 

      Lipopolysaccharide

    • C. 

      Phospholipid

    • D. 

      Steroid

  • 20. 
    Hopanoids are found in __________ cytoplasmic membranes.
    • A. 

      Eukaryotic

    • B. 

      Bacterial

    • C. 

      Archaeal

    • D. 

      Prokaryotic

  • 21. 
    Which of the following may have cell walls containing teichoic acids?
    • A. 

      Gram-negative bacteria

    • B. 

      Gram-positive bacteria

    • C. 

      Archaea

    • D. 

      Both Gram-positive and Gram-negative bacteria

  • 22. 
    Which of the following prokaryotic cells contain an outer membrane?
    • A. 

      Gram-negative bacteria

    • B. 

      Gram-positive bacteria

    • C. 

       both Gram-positive and Gram-negative bacteria