Antiviral Medications Mechanisms Quiz
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Questions and Answers

Which class of drugs slows down the protein synthesis and transcription of viral mRNA in an infected cell?

  • Interferon (correct)
  • Polymerase inhibitors
  • Neuraminidase inhibitors
  • Protease inhibitors
  • What is the main target of protease inhibitors like Boceprevir and telaprevir?

  • Viral mRNA splicing
  • Viral genome replication
  • Viral-specific posttranslational modifications (correct)
  • Viral glycoproteins
  • Which enzyme of influenza viruses is crucial in preventing intracellular and cell surface aggregation of viral glycoproteins?

  • RNA polymerase
  • Neuraminidase (correct)
  • Reverse transcriptase
  • Helicase
  • What is the primary mechanism of action of lamivudine and adefovir in inhibiting viral replication?

    <p>Slowing down protein synthesis and transcription of viral mRNA</p> Signup and view all the answers

    Which drug class targets specific posttranslational modifications of viral proteins?

    <p>Protease inhibitors</p> Signup and view all the answers

    Which of the following drugs is a guanosine analog that causes premature DNA chain termination?

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

    How do amantadine and rimantadine inhibit viral replication?

    <p>By blocking the hydrogen channel formed by the viral M2 proton pore</p> Signup and view all the answers

    Which drug is effective against many RNA viruses, including respiratory syncytial virus infections in infants?

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

    What is the mechanism of action of ribavirin in inhibiting viral replication?

    <p>Inhibiting GTP formation</p> Signup and view all the answers

    Which of the following drugs is converted into di- and triphosphate forms by host cell kinases to cause premature DNA chain termination?

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

    What is the mechanism of action of ribavirin 5`-phosphate derivatives?

    <p>Inhibit viral RNA polymerase</p> Signup and view all the answers

    Which type of viruses can be targeted by reverse transcriptase inhibitors?

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

    What is the role of Remdesivir as an antiviral agent?

    <p>Inhibits viral RNA polymerase</p> Signup and view all the answers

    Why are reverse transcriptase inhibitors phosphorylated to the active form by host kinases?

    <p>To inhibit viral reverse transcriptase</p> Signup and view all the answers

    When is Remdesivir currently approved as a COVID-19 treatment?

    <p>Within 5 days of symptoms</p> Signup and view all the answers

    What is the first step in the viral life cycle?

    <p>Viral attachment to the cell</p> Signup and view all the answers

    Which type of antibodies bind to the viral attachment protein to prevent viral entry into cells?

    <p>Neutralizing antibodies</p> Signup and view all the answers

    What is a common mechanism of inhibitors that target viral uncoating?

    <p>Interfering with disassembly of capsid</p> Signup and view all the answers

    Which type of antiviral therapy involves the administration of specific antibodies?

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

    For viruses that enter through endocytic vesicles, which process can be disrupted by inhibitors of viral uncoating?

    <p>Interaction with fusion protein</p> Signup and view all the answers

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