8-L2
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Questions and Answers

What is a common characteristic of viruses?

  • Being able to multiply outside of living cells
  • Being too large to pass through filters
  • Being seen with an ordinary light microscope
  • Being an obligate intracellular parasite (correct)

    • What do viruses contain?

  • Either a RNA or DNA genome (correct)
  • Both RNA and DNA genome
  • Only RNA genome
  • Only DNA genome

    • What is true about the composition of viruses?

  • They contain polysaccharides
  • They contain small ions
  • They do not contain lipids
  • They may or may not contain lipids (correct)

    • What is the shape of some viral capsids?

    <p>Either Helical or Icosahedral</p> Signup and view all the answers

    What is the status of viruses in terms of living or nonliving?

    <p>Viruses are nonliving things</p> Signup and view all the answers

    What do viruses depend on for propagation?

    <p>Specialized host cells</p> Signup and view all the answers

    What is the size range of viruses?

    <p>18-350 nm</p> Signup and view all the answers

    What is the primary function of the capsid?

    <p>To protect the delicate inner nucleic acid from harsh environmental conditions</p> Signup and view all the answers

    Why are viruses considered obligate intracellular parasites?

    <p>They can only replicate in a host cell</p> Signup and view all the answers

    What is the term for the process by which a virus acquires its envelope from the host cell membrane?

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

    What is the function of the genetic information in a virus?

    <p>To serve as mRNA and be directly translated into protein</p> Signup and view all the answers

    What is the term for viruses that contain only the viral nucleic acid and the capsid?

    <p>Non-enveloped viruses</p> Signup and view all the answers

    What is the role of virally encoded proteins in the viral envelope?

    <p>To play a major role in the viral life cycle, including attachment and fusion</p> Signup and view all the answers

    What is the term for the individual subunits that make up the capsid?

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

    Which of the following viruses is an example of a double-stranded DNA virus?

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

    What is the characteristic of a viral genome that is unsegmented?

    <p>It consists of a single piece of RNA or DNA</p> Signup and view all the answers

    What are the two basic structures of the capsid?

    <p>Icosahedral and Helical</p> Signup and view all the answers

    What is the primary function of the capsid in a virus?

    <p>To surround and protect the genome</p> Signup and view all the answers

    What type of nucleic acid can be found in a virus genome?

    <p>Either DNA or RNA, but not both</p> Signup and view all the answers

    What is the term for the genome surrounded by a capsid?

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

    What is the origin of the lipid component of a viral envelope?

    <p>The host cell membrane</p> Signup and view all the answers

    What is the purpose of the spikes on a virus?

    <p>To attach the virus to the host cell</p> Signup and view all the answers

    What is the term for the smaller subunits that make up a capsid?

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

    Which virus is responsible for causing encephalitis?

    <p>JC virus</p> Signup and view all the answers

    What is the name of the virus that causes pharyngitis?

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

    Which virus causes gingivostomatitis?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the virus that causes cardiovascular infections?

    <p>Coxsackie B virus</p> Signup and view all the answers

    Which virus causes hepatitis?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the virus that causes skin infections?

    <p>All of the above</p> Signup and view all the answers

    Which virus causes pneumonia?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the virus that causes myelitis?

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

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