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Microbiology Quiz 2 - Chapter 6

19 Questions
Microbiology Quizzes & Trivia
Questions and Answers
  • 1. 
    Viruses have all the following except
    • A. 

      Definite shape

    • B. 

      Metabolism

    • C. 

      Genes

    • D. 

      Ability to infect host cells

    • E. 

      Ultramicroscopic size

  • 2. 
    Viruses
    • A. 

      Cannot be seen in a light microscope

    • B. 

      Are prokaryotic

    • C. 

      Contain 70S ribosomes

    • D. 

      Undergo binary fission

    • E. 

      All of the choices are correct

  • 3. 
    Virus capsids are made from subunits called
    • A. 

      Envelopes

    • B. 

      Spikes

    • C. 

      Capsomeres

    • D. 

      Prophages

    • E. 

      Peplomers

  • 4. 
    • A. 

      Are always present on enveloped viruses

    • B. 

      Bind viral capsid and envelope together

    • C. 

      Allow bacteria to evade host defenses

    • D. 

      Are derived from host proteins

    • E. 

      All of the choices are correct

  • 5. 
    The core of every virus particle always contains
    • A. 

      DNA

    • B. 

      Capsomeres

    • C. 

      Enzymes

    • D. 

      DNA and RNA

    • E. 

      Either DNA or RNA

  • 6. 
    Which of the following represents a virus family name?
    • A. 

      Herpes simplex virus

    • B. 

      Herpesviridae

    • C. 

      Picornavirus

    • D. 

      Enterovirus

    • E. 

      Hepatitis B virus

  • 7. 
    The correct sequence of events in viral multiplication is
    • A. 

      Penetration, uncoating, synthesis, adsorption, assembly, release

    • B. 

      Uncoating, penetration, synthesis, assembly, absorption, release

    • C. 

      Adsorption, penetration, uncoating, synthesis, assembly, release

    • D. 

      Assembly, synthesis, uncoating, release, penetration, adsorption

    • E. 

      Adsorption, release, synthesis, uncoating, assembly, penetration

  • 8. 
    In general, most DNA viruses multiply in the host cell's _____, while most RNA viruses multiply in the host cell's _____.
    • A. 

      Nucleus, cytoplasm

    • B. 

      Cytoplasm, cell membrane

    • C. 

      Cell membrane, cytoplasm

    • D. 

      Cytoplasm, nucleus

    • E. 

      Nucleus, endoplasmic reticulum

  • 9. 
    Host range is limited by
    • A. 

      Type of nucleic acid in the virus

    • B. 

      Age of the host cell

    • C. 

      Type of host cell receptors on cell membrane

    • D. 

      Size of the host cell

    • E. 

      All of the choices are correct

  • 10. 
    Mammalian viruses capable of starting tumors are
    • A. 

      Chronic latent viruses

    • B. 

      Oncoviruses

    • C. 

      Syncytia

    • D. 

      Inclusion bodies

    • E. 

      Cytiopathic

  • 11. 
    Persistent viruses that can reactivate periodically are
    • A. 

      Chronic latent viruses

    • B. 

      Oncoviruses

    • C. 

      Syncytia

    • D. 

      Inclusion bodies

    • E. 

      Cytiopathic

  • 12. 
    • A. 

      Altering the host range of a virus

    • B. 

      Latent state of herpes infections

    • C. 

      Virion exiting host cell

    • D. 

      Viral genome inserting into bacterial host chromosome

    • E. 

      None of the choices are correct

  • 13. 
    Viruses that infect bacteria are specifically called
    • A. 

      Viroids

    • B. 

      Prions

    • C. 

      Bacteriophages

    • D. 

      Satellite viruses

    • E. 

      All of the choices infect bacteria

  • 14. 
    A common method for cultivating viruses in the lab is to use in vitro systems called _____ cultures.
    • A. 

      Embryo

    • B. 

      Cell

    • C. 

      Plaque

    • D. 

      Bacteriophage

    • E. 

      Egg

  • 15. 
    Infectious protein particles are called
    • A. 

      Viroids

    • B. 

      Phages

    • C. 

      Prions

    • D. 

      Oncogenic viruses

    • E. 

      Spikes

  • 16. 
    Infectious naked strands of RNA that affect plants are called
    • A. 

      Viroids

    • B. 

      Phages

    • C. 

      Prions

    • D. 

      Oncogenic viruses

    • E. 

      Spikes

  • 17. 
    • A. 

      Caused by a chronic latent virus

    • B. 

      Initiated by an oncogenic virus

    • C. 

      Caused by a viroid

    • D. 

      A spongiform encephalopathy of humans

    • E. 

      Also called "mad cow disease

  • 18. 
    Two noncellular agents, smaller than viruses, are the infectious proteins called _____ and the infectious RNA strands called _____.
    • A. 

      Prions, capsomeres

    • B. 

      Virions, prions

    • C. 

      Viroids, phages

    • D. 

      Prions, phages

    • E. 

      Prions, viroids

  • 19. 
    Viruses are unable to multiple outside of a host cell.
    • A. 

      True

    • B. 

      False