Bacteriophage Viral Life Cycle
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Questions and Answers

What process is described when mature viruses burst out of the host cell to infect new cells?

  • Lysogenic conversion
  • Lysogeny
  • Phage integration
  • Lysis (correct)

During the lysogenic cycle, what does the phage genome do inside the bacterial host cell?

  • Integrates into the bacterial chromosome (correct)
  • Forms new viruses
  • Remains inactive outside the cell
  • Kills the host cell

What term is used for a bacterial host containing an integrated phage genome called a prophage?

  • Virulent host
  • Lysogen (correct)
  • Temperate host
  • Phage converter

What is the name of the process where a bacterium is infected by a temperate phage?

<p>Lysogeny (A)</p> Signup and view all the answers

What triggers the excision of the prophage from the host chromosome?

<p>Environmental stressors (D)</p> Signup and view all the answers

Which term describes the situation when phage-encoded toxin genes increase the bacterial virulence?

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

What characterizes a temperate bacteriophage?

<p>Can undergo both lytic and lysogenic cycles (A)</p> Signup and view all the answers

What type of phages are typically latent or inactive within the bacterial cell?

<p>Temperate phages (B)</p> Signup and view all the answers

What happens during specialized transduction in bacteriophages?

<p>Bacterial DNA is transferred between bacteria (A)</p> Signup and view all the answers

Which cycle describes the incorporation of phage DNA into the host genome?

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

What can cause a latent phage to enter the lytic cycle?

<p>Environmental stressors (C)</p> Signup and view all the answers

How does a temperate bacteriophage differ from a virulent bacteriophage?

<p>Virulent phages do not integrate into the host chromosome (D)</p> Signup and view all the answers

What is the major difference between the provirus stage and the prophage stage?

<p>Provirus does not undergo excision after splicing into the genome, unlike prophage. (A)</p> Signup and view all the answers

Which category of persistent infections involves the alteration of the host immune response?

<p>Chronic infection (A)</p> Signup and view all the answers

In persistent infections, what are the two primary categories mentioned?

<p>Latent infection and chronic infection (A)</p> Signup and view all the answers

During the viral life cycle, what converts the single-stranded RNA genome into DNA?

<p>Viral enzymes (D)</p> Signup and view all the answers

Which virus causes latent infections such as oral and genital herpes?

<p>Herpes simplex virus (D)</p> Signup and view all the answers

What happens to a virus in a persistent infection where it may remain silent or undergo productive infection without harming or killing the host?

<p>It stays in certain tissues or organs of the infected person. (B)</p> Signup and view all the answers

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