Viral Multiplication and Antiviral Agents
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Questions and Answers

What is the target of Nucleoside analogs in viral multiplication?

  • Viral particle release
  • Viral mRNA
  • Viral protein synthesis
  • Viral DNA and RNA polymerase (correct)
  • What is the primary disadvantage of chemoprophylaxis in preventing viral infections?

  • It is not widely available
  • It is a costly method
  • It is not effective against viral infections
  • It can also affect normal host cells (correct)
  • What type of vaccine is prepared by heat or chemical inactivation of whole virions?

  • Live virus vaccine
  • Virion subunit vaccine
  • Killed virus vaccine (correct)
  • Polypeptide vaccine
  • What is the function of interferon in preventing viral infections?

    <p>It activates immune cells to fight viral infections</p> Signup and view all the answers

    What is the target of Indinavir and Siquinavir in viral multiplication?

    <p>Cleavage of precursor polypeptide</p> Signup and view all the answers

    What is the advantage of using Virion subunit vaccine over killed virus vaccine?

    <p>It has fewer risks of adverse reactions</p> Signup and view all the answers

    What is the outcome when there is no antigen that binds to the antibody in a hemagglutination reaction?

    <p>Hemolysis occurs</p> Signup and view all the answers

    Which of the following is NOT a method for diagnosing viral diseases?

    <p>X-ray imaging</p> Signup and view all the answers

    What is the purpose of adding enzyme-linked anti-HISG in the ELISA test?

    <p>To bind to the bound antibody</p> Signup and view all the answers

    What is a challenge in treating viral diseases?

    <p>The virus is spread throughout the body by the time symptoms appear</p> Signup and view all the answers

    What is the result of adding enzyme substrate in the ELISA test?

    <p>A color change is produced</p> Signup and view all the answers

    Which of the following is a reason for the emergence of drug-resistant mutants in viral diseases?

    <p>Mutants of herpes virus resistant to Acyclovir have been recovered from patients</p> Signup and view all the answers

    What is the primary consideration when selecting a specimen type for viral diagnosis?

    <p>The clinical and epidemiological considerations</p> Signup and view all the answers

    When is it best to collect a specimen for viral diagnosis?

    <p>As early as possible, within the first 4 days of symptom onset</p> Signup and view all the answers

    What type of material should be avoided when collecting a viral specimen?

    <p>Cotton swab with calcium alginate</p> Signup and view all the answers

    Why is it recommended to use viral transport medium for most specimens?

    <p>It contains a protein stabilizer and antibiotics</p> Signup and view all the answers

    What should be done if there is a delay in processing the specimen?

    <p>Hold the specimen at 4°C</p> Signup and view all the answers

    What is the primary purpose of including antibiotics in viral transport medium?

    <p>To prevent contamination during transport</p> Signup and view all the answers

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