Bacteriophage Life Cycle Quiz
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Questions and Answers

Which cycle of viral replication involves the integration of viral genome into the host genome?

  • Prophage cycle
  • Lysogenic cycle (correct)
  • Invasive cycle
  • Lytic cycle
  • Which cycle of viral replication occurs independent of the host cell replication mechanism?

  • Prophage cycle
  • Invasive cycle
  • Lytic cycle (correct)
  • Lysogenic cycle
  • Which cycle of viral replication results in the production of numerous new virus particles?

  • Invasive cycle
  • Lysogenic cycle
  • Lytic cycle (correct)
  • Prophage cycle
  • What is the term used to describe the integrated viral genome in the lysogenic cycle?

    <p>Prophage</p> Signup and view all the answers

    What is the term used to describe the structure on the bacteriophage that recognizes receptors on the bacterial cell wall?

    <p>Tail fibers</p> Signup and view all the answers

    Which term is used to describe the phenotypical changes in bacteria due to the presence of a prophage?

    <p>Lysogenic conversion</p> Signup and view all the answers

    What type of genes can be present in a prophage and contribute to the phenotypical changes in the host bacteria?

    <p>Toxin genes</p> Signup and view all the answers

    Which bacteria exhibit enhanced virulence in the presence of a prophage?

    <p>Vibrio cholerae</p> Signup and view all the answers

    What is the term for the incorporation of additional traits in the host bacteria by prophage-specific genes?

    <p>Phage transduction</p> Signup and view all the answers

    Which of the following is NOT a potential outcome of lysogenic conversion in bacteria?

    <p>Reduced metabolic activity</p> Signup and view all the answers

    Which of the following is true about the lysogenic life cycle?

    <p>It establishes a dormant stage of the bacteriophage life cycle</p> Signup and view all the answers

    During the lysogenic life cycle, the integrated phage genome is known as a ___.

    <p>Prophage</p> Signup and view all the answers

    What triggers the transition from lysogenic to lytic cycle?

    <p>All of the above</p> Signup and view all the answers

    What happens during the maturation phase of the lytic cycle?

    <p>Assembly of new virions</p> Signup and view all the answers

    What is the first step in the bacterial lytic infection cycle?

    <p>Phage attachment to the host cell surface</p> Signup and view all the answers

    Which mode of viral replication involves the replication of viral DNA along with the host cellular DNA without harming the host cell?

    <p>Lysogenic cycle</p> Signup and view all the answers

    During which mode of viral replication are new virus particles assembled inside the host cell and released by bursting and killing the host cell?

    <p>Lytic cycle</p> Signup and view all the answers

    Which mode of viral replication is responsible for the high infectivity rate of viral diseases among their hosts?

    <p>Lytic cycle</p> Signup and view all the answers

    What is the main difference between lytic and lysogenic cycles?

    <p>Lytic cycle kills the host cell, while lysogenic cycle does not harm the host cell.</p> Signup and view all the answers

    What happens to the viral DNA during the lysogenic cycle?

    <p>The viral DNA is replicated along with the host cellular DNA.</p> Signup and view all the answers

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