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

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

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

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

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

Which DNA virus family is known for not being enveloped?

<p>Parvoviridae (C)</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 (B)</p> Signup and view all the answers

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

<p>Rhabdovirus (C)</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 (D)</p> Signup and view all the answers

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

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

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

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

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

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

Which characteristic of viruses is classified as a living characteristic?

<p>Can mutate (D)</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 (B)</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) (C)</li> </ul> Signup and view all the answers

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

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

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

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

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

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

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