Viral Replication Steps Quiz
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Questions and Answers

During viral replication, where does DNA replication typically occur?

  • Viral nucleocapsids
  • Enveloped viruses
  • Host cell nucleus (correct)
  • Host cell cytoplasm

    • What is the primary method of release for enveloped viruses?

  • Budding (correct)
  • Passive disintegration of dying cells
  • Nucleocapsid assembly
  • Lysis of host cells

    • Which phase of the infectious cycle involves attachment to host cells?

  • Uncoating
  • Transcription
  • Release
  • Penetration (correct)

    • What is the main feature of the eclipse period in a one-step growth curve?

    <p>Infectious virus yield variation</p> Signup and view all the answers

    Where does RNA replication take place in the context of viral replication?

    <p>Host cell cytoplasm</p> Signup and view all the answers

    How does the release of naked viruses typically occur?

    <p>Passive cell lysis</p> Signup and view all the answers

    Which process involves RNA synthesis in viral replication?

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

    Where does genome replication occur for DNA viruses?

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

    What type of genes are transcribed before DNA replication begins in DNA viruses?

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

    What is the primary function of late genes in DNA virus replication?

    <p>Virion structure formation</p> Signup and view all the answers

    How does the size of a viral genome impact its dependence on the host cell for replication functions?

    <p>Smaller genomes depend more on host cells</p> Signup and view all the answers

    What is the role of early proteins in DNA virus replication?

    <p>Genome replication</p> Signup and view all the answers

    What is the end product of transcription in the context of viral replication?

    <p>Late mRNA</p> Signup and view all the answers

    Which type of RNA viruses replicates via a complementary (+) strand intermediate?

    <p>Type I RNA viruses with single-stranded genome of (+) polarity</p> Signup and view all the answers

    What is the primary function of late proteins in viral replication?

    <p>Assemble the virus capsid</p> Signup and view all the answers

    How do RNA viruses with a genome of (–) polarity replicate?

    <p>Replicate via a complementary (+) strand intermediate</p> Signup and view all the answers

    Which feature is unique to viruses with a dsRNA genome?

    <p>Replicate using host cell RNA polymerase</p> Signup and view all the answers

    What is the role of viral proteins in favor of virus production and genome replication?

    <p>Ensure replication of viral genome</p> Signup and view all the answers

    What is a characteristic that distinguishes Influenza A type H5N1 from types H1N1 and H3N2?

    <p>More severe disease in humans</p> Signup and view all the answers

    What can result in a shorter incubation period for a viral infection?

    <p>A larger dose of virus</p> Signup and view all the answers

    Which characteristic best describes latent infection?

    <p>Integration into host chromosome</p> Signup and view all the answers

    What can cause the reactivation of a latent viral infection?

    <p>A eukaryotic host cell entering another cell cycle phase</p> Signup and view all the answers

    Which outcome is associated with abortive infections?

    <p>No virus progeny produced</p> Signup and view all the answers

    What happens in productive infections where progeny are released with no host damage?

    <p>Produces progeny without harming the host cell</p> Signup and view all the answers

    What are perforins released by NK cells responsible for?

    <p>Inducing apoptosis in virus-infected cells</p> Signup and view all the answers

    How does the presence of HIV particles in the blood affect NK cells' activities?

    <p>Reduces their efficiency in killing virus-infected cells</p> Signup and view all the answers

    Which lymphocytes develop in the thymus?

    <p>T lymphocytes</p> Signup and view all the answers

    What triggers the specific immune response in adaptive immunity against viral infections?

    <p>Binding of epitope to specific receptors on lymphocytes</p> Signup and view all the answers

    What is the function of antibodies synthesized by plasma cells?

    <p>Coat both virions and virus-infected cells for destruction</p> Signup and view all the answers

    How are perforins and antibodies different in their action against viruses?

    <p>Perforins induce apoptosis, while antibodies coat viruses for destruction</p> Signup and view all the answers

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