Pharmaceutical Microbiology: Virology Study of Viruses
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Questions and Answers

Which infectious agent consists only of RNA and causes plant diseases?

  • Prions
  • Viroids (correct)
  • Viroids and Prions
  • Bacteria
  • What is the name given to infectious proteins that cause fatal neurodegenerative diseases?

  • Viroids
  • Parasites
  • Bacteria
  • Prions (correct)
  • Which disease is associated with cannibalistic practices and caused by prions?

  • Mad Cow Disease
  • CJD
  • Scrapie
  • Kuru (correct)
  • Which agent causes a degenerative brain disorder leading to dementia and death in humans?

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

    Which of the following viroids causes coconut cadang-cadang disease?

    <p>Coconut Cadang-Cadang Viroid</p> Signup and view all the answers

    In which animals do we find the disease Scrapie, caused by prions?

    <p>Sheep, Mice, Hamster</p> Signup and view all the answers

    Which DNA virus family is known for not being enveloped?

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

    What is the specific characteristic of RNA viruses regarding their replication location?

    <p>All replicate in the cytoplasm</p> Signup and view all the answers

    Which RNA virus family is known for having a bullet-shaped structure?

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

    What is the common feature of all RNA viruses listed as having non-segmented genomes?

    <p>-Sense RNA virus</p> Signup and view all the answers

    Which neurodegenerative disease is caused by mutations in the PRNP gene?

    <p>Gerstmann-Straussler-Scheinker (GSS) syndrome</p> Signup and view all the answers

    In which neurodegenerative disease does abnormal prion protein transformation occur spontaneously?

    <p>Sporadic fatal insomnia (SFI)</p> Signup and view all the answers

    What is the main function of a viral capsid in viruses?

    <p>Aids in host cell invasion</p> Signup and view all the answers

    Which characteristic of viruses is classified as a living characteristic?

    <p>Can mutate</p> Signup and view all the answers

    What does the term 'obligate intracellular parasites' refer to in viruses?

    <p>Viruses that depend on host cells for replication</p> Signup and view all the answers

    Which type of nucleic acid can be found in viruses based on the text?

    <ul> <li>or – (if RNA)</li> </ul> Signup and view all the answers

    What is the approximate size range of viruses based on the text?

    <p>10-400 nm</p> Signup and view all the answers

    What is the main function of an envelope in viral morphology?

    <p>Protection against host cell defenses</p> Signup and view all the answers

    Which process involves the release of newly formed virus particles from a host cell?

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

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