Bacteria 101

20 Questions

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Bacteria Quizzes & Trivia

This quiz should give you a general idea about bacterial morphology and structure.


Questions and Answers
  • 1. 
    Which of the following is essential to bacteria because they lack compartmentalization?
    • A. 

      Small surface-to-volume ratio

    • B. 

      Large surface-to-volume ratio

    • C. 

      Large size

    • D. 

      Large volume-to-surface ratio

  • 2. 
    Which of the following refers to a wavy shape?
    • A. 

      Pleomorphic

    • B. 

      Coccus

    • C. 

      Vibrio

    • D. 

      Spirochete

    • E. 

      Spirillum

  • 3. 
    Which of the following refers to a short rod?
    • A. 

      Coccus

    • B. 

      Bacillus

    • C. 

      Vibrio

    • D. 

      Coccobacillus

    • E. 

      Spirillum

  • 4. 
    Which of the following would refer to a "grapelike cluster"?
    • A. 

      Strepto-

    • B. 

      Sarcina

    • C. 

      Staphylo-

    • D. 

      Tetrads

    • E. 

      Diplo-

  • 5. 
    Most bacterial cell membranes contain sterols.
    • A. 

      True

    • B. 

      False

  • 6. 
    Which of the following is not a function of the cell wall?
    • A. 

      Holds genetic information

    • B. 

      Maintenance of cell shape

    • C. 

      Prevention of osmotic lysis

    • D. 

      Anchor for external structures

    • E. 

      Provide environmental protection

  • 7. 
    Which of the following does a bacterial cell wall contain?
    • A. 

      Chitin

    • B. 

      Peptidoglycan

    • C. 

      Cellulose

    • D. 

      Erogosterol

    • E. 

      Mannan

  • 8. 
    Which of the following are NOT found in Gram Negative bacteria?
    • A. 

      Lipopolysaccharide

    • B. 

      O antigen

    • C. 

      Trimeric Porins

    • D. 

      Lipid A

    • E. 

      H antigen

  • 9. 
    Gram Positive bacteria contain Lipid A that contains toxins that may cause septic shock in a host.
    • A. 

      True

    • B. 

      False

  • 10. 
    What structure in Gram Negative bacteria serves as a stabilizer for the outer membrane?
    • A. 

      Teichoic Acid

    • B. 

      Mycolic Acid

    • C. 

      Lipoprotein

    • D. 

      Lipopolysaccharide

    • E. 

      Periplasmic Space

  • 11. 
    Gram Positive bacteria does NOT contain which of the following?
    • A. 

      Peptidoglycan

    • B. 

      Teichoic Acid

    • C. 

      Lipid A

    • D. 

      Lipoteichoic Acid

  • 12. 
    What stain is used for acid fast bacteria?  May choose more than one.
    • A. 

      Ziehl-Neehlson Stain

    • B. 

      Gram Stain

    • C. 

      Carbol fuchsin dye

    • D. 

      Methylene Blue

    • E. 

      PAS

  • 13. 
    Which of the following is NOT an acid fast bacteria?
    • A. 

      E. Coli

    • B. 

      Mycobacterium tuberculosis

    • C. 

      Nocardia asteroides

    • D. 

      M. leprae

  • 14. 
    The A antigen in flagellum is used in typing bacterial isolates.
    • A. 

      True

    • B. 

      False

  • 15. 
    Davy is looking at some bacteria under the microscope and he notices that it has 3 flagella at one end that are helping it to swim across the viewing area.  This bacteria would be classified as?
    • A. 

      Peritrichous

    • B. 

      Amphitrichous

    • C. 

      Lophotrichous

    • D. 

      Monotrichous

    • E. 

      Ciliated

  • 16. 
    The same bacteria Davy found is swimming toward food.  What word below describes his movement?
    • A. 

      Chemotaxis

    • B. 

      Twitching

    • C. 

      Chemotoxicity

    • D. 

      Phototrophic

  • 17. 
    Which of the following is NOT a function of pili?
    • A. 

      Bind to sugars using lectins

    • B. 

      Twitching

    • C. 

      Secreted slime layer

    • D. 

      Adhesion to a host cell

    • E. 

      Exchanging DNA

  • 18. 
    A capsule or slime layer (glycocalyx) makes a bacteria less virulent.
    • A. 

      True

    • B. 

      False

  • 19. 
    Which of the following allows you to detect the presence of a capsule when S. pneumoniae is suspected?
    • A. 

      Quahog reaction

    • B. 

      Quellung reaction

    • C. 

      Acid fast reaction

    • D. 

      Gram Staining

  • 20. 
    Which of the following is NOT true of bacterial ribosomes?
    • A. 

      Contain 70S ribosome

    • B. 

      Contain 30S subunit

    • C. 

      Contain 40S subunit

    • D. 

      Contain 50S subunit