General Virology Quiz
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Questions and Answers

Why are viruses considered obligate intracellular parasites?

  • They are susceptible to antibiotics
  • They have their own ATP generating system
  • They lack a receptor-binding site
  • They multiply only in living cells (correct)
  • What is the unique feature of Pox virus regarding its genome as observed by electron microscopy?

  • It has a peculiar replication cycle
  • It is the only virus with a genome observed by EM (correct)
  • It lacks a genome
  • It has a larger genome compared to other viruses
  • What is the general size range of viruses?

  • 100 - 500 nm
  • 1 - 10 µm
  • 20 - 300 nm (correct)
  • 500 - 1000 nm
  • What is the function of the receptor-binding site on viruses?

    <p>It reacts specifically with a corresponding receptor on the infected cell</p> Signup and view all the answers

    Where is the envelope located in viruses?

    <p>Outside the capsid</p> Signup and view all the answers

    Study Notes

    Viral Characteristics

    • Viruses are considered obligate intracellular parasites because they require a host cell to replicate and survive.

    Pox Virus Genome

    • The unique feature of Pox virus regarding its genome is that it is brick-shaped and has a linear double-stranded DNA molecule.

    Size Range of Viruses

    • The general size range of viruses is between 20-400 nanometers (nm) in diameter.

    Receptor-Binding Site

    • The receptor-binding site on viruses is responsible for recognizing and binding to specific receptors on host cells, allowing the virus to enter the cell.

    Viral Envelope

    • The envelope is a lipid bilayer membrane located on the outside of some viruses, which helps to protect the viral genome during transmission and aids in the attachment and entry of the virus into host cells.

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    Quiz Team

    Description

    Test your knowledge of general virology with this quiz by Dr. Ayman Asaad. Explore the small size, genome types, replication cycles, and unique properties of viruses. Learn about their ability to induce latent infection and their obligate intracellular nature.

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