Microbiology Exam 3

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Microbiology Quizzes & Trivia
Some questions for Microbiology 130 Exam 3

  
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  • 1. 
    Which of these is not a means of identifying viruses?
    • A. 

      PCR

    • B. 

      By their cytopathic effects

    • C. 

      Ribotyping

    • D. 

      Serological testing


  • 2. 
    The lysogenic cycle is different from the lytic cycle in that the _____.
    • A. 

      The phage DNA is incorporated into host cell DNA

    • B. 

      The cell bursts during release

    • C. 

      Phages contain RNA genomes

    • D. 

      There is no latent period


  • 3. 
    Which of these is a method of growing animal viruses in the laboratory?
    • A. 

      In live animals

    • B. 

      In embryonated eggs

    • C. 

      In cell culture

    • D. 

      All of the above


  • 4. 
    Which bacteriophage life cycle is responsible for transduction?
    • A. 

      Lytic cycle

    • B. 

      Lysogenic cycle


  • 5. 
    The spectrum of cells that a virus can infect is called the ____.
    • A. 

      Infection target

    • B. 

      Infection host

    • C. 

      Host range

    • D. 

      Host spectrum


  • 6. 
    A bacterium that exhibits new properties or abilities due to the presence of a prophage is said to have undergone ______.
    • A. 

      Phage conversion

    • B. 

      Genetic conversion

    • C. 

      Transduction

    • D. 

      Transduction


  • 7. 
    An oncogene is _____.
    • A. 

      A part of the viral genome

    • B. 

      A part of the human genome

    • C. 

      Involved in suppressing cancers

    • D. 

      Important in viral infection


  • 8. 
    Which of these is an infectious protein?
    • A. 

      Virion

    • B. 

      Viroid

    • C. 

      Proteoid

    • D. 

      Prion


  • 9. 
    Bacteriophages and animal viruses do not differ significantly in which of the following steps?
    • A. 

      Adsorption

    • B. 

      Penetration

    • C. 

      Uncoating

    • D. 

      Biosynthesis


  • 10. 
    Which structure of prokaryotic cells are used for phylogeny?
    • A. 

      Ribosomes

    • B. 

      Plasma membranes

    • C. 

      Flagella

    • D. 

      Mitochondria


  • 11. 
    Viruses that can cause cancers are called ______.
    • A. 

      Cancer viruses

    • B. 

      Transforming viruses

    • C. 

      DNA viruses

    • D. 

      Oncogenic viruses


  • 12. 
    A virion is _____.
    • A. 

      A complete, infectious virus particle

    • B. 

      A naked, infectious piece of RNA

    • C. 

      A capsid without a nucleic acid

    • D. 

      A provirus


  • 13. 
    Viruses have a protein coat called a _____.
    • A. 

      Capsid

    • B. 

      Capsomere

    • C. 

      Virion

    • D. 

      Prion


  • 14. 
    Which of these are naked pieces of infectious RNA?
    • A. 

      Virions

    • B. 

      Prions

    • C. 

      Viroids

    • D. 

      Phages


  • 15. 
    Which of these would an enveloped virus use for attachment?
    • A. 

      Capsid

    • B. 

      Tail fibers

    • C. 

      Spikes

    • D. 

      Flagella


  • 16. 
    Most viruses have a broad host range.
    • A. 

      True

    • B. 

      False


  • 17. 
    When a virus enters a cell it must release its nucleic acid into the host cell. This is called ____.
    • A. 

      Nucleic acid release

    • B. 

      Maturation

    • C. 

      Biosynthesis

    • D. 

      Uncoating


  • 18. 
    Some viruses, such as Human Herpes Virus 1, infect a cell without causing symptoms; these are called _____.
    • A. 

      Latent viruses

    • B. 

      Lytic viruses

    • C. 

      Lysogenic viruses

    • D. 

      Persistent viruses


  • 19. 
    Which of the following is not based on nucleic-acid hybridization?
    • A. 

      DNA chip

    • B. 

      FISH

    • C. 

      Western blotting

    • D. 

      Southern blotting


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