Medical Microbiology: Virus Lecture 1
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Questions and Answers

What is the basis of classification of viruses according to the text?

  • Physiochemical and antigenic properties
  • Virus protein properties and antigenic properties
  • Virus morphology and genome properties (correct)
  • Virus morphology and physiochemical properties

What is the Latin word for 'poison'?

  • Virus (correct)
  • Microscopic
  • Protozoa
  • Fungi

Which general characteristic is NOT included in the classification of viruses according to the text?

  • Presence of specific enzymes
  • Size and shape (correct)
  • Susceptibility to chemical and physical agents especially ether
  • pH stability

What are the relative sizes of microorganisms as compared to the unaided human eye?

<p>40 μm (C)</p> Signup and view all the answers

What is the size range of viruses according to the provided information?

<p>0.02-0.3 μm (30-300 nm) (B)</p> Signup and view all the answers

What is the geometric symmetry of a virus that produces a hollow near spherical structure with 20 identical triangular faces?

<p>Cubic or icosahedral symmetry (D)</p> Signup and view all the answers

Which method of virus transmission involves direct transfer from other infected hosts through sexual contact?

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

During which step of viral replication does the virus attach to the cell surface by recognizing specific receptors?

<p>Attachment/Adsorption (A)</p> Signup and view all the answers

How are non-envelope viruses engulfed into vacuoles during virus entry (penetration)?

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

In which process of viral release does budding of enveloped viruses occur through the host cell membrane?

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

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