DNA Replication and Z-ring Formation Quiz
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Questions and Answers

What is the primary factor that dictates the details of the replication cycle of an animal virus?

  • The mode of entry into the host cell
  • The type of host cell infected
  • The presence of a viral envelope
  • The form of the virus's genome (correct)
  • Which type of virus utilizes an RNA-dependent RNA polymerase to transcribe its mRNA?

  • RNA viruses (correct)
  • Papillomaviruses
  • Retroviruses
  • DNA viruses
  • What is the key difference between animal viruses and bacterial viruses in terms of entry mechanism?

  • Both animal and bacterial viruses enter through membrane fusion
  • Animal viruses enter via membrane fusion while bacterial viruses use endocytosis (correct)
  • Both animal and bacterial viruses enter through endocytosis
  • Bacterial viruses enter via membrane fusion while animal viruses use endocytosis
  • What is mandatory for HIV infection to occur in a host cell?

    <p>Adhesion of the viral gp120 envelope protein to a specific cell surface marker</p> Signup and view all the answers

    In animal cells, where does the viral capsid get delivered during HIV infection?

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

    Which virus exhibits broad tropism by infecting many host tissues?

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

    What enzyme do retroviruses utilize to copy their genomic sequence into DNA for insertion into the host chromosome?

    <p>Reverse transcriptase</p> Signup and view all the answers

    What is the site of replication for many animal viruses within eukaryotic cells?

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

    Which taxonomic level is represented by the naming 'Escherichia coli'?

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

    What is the main difference between a strain and a serotype?

    <p>Strains are distinct subtypes that differ genetically, while serotypes differ phenotypically.</p> Signup and view all the answers

    Which of the following is NOT commonly used to classify bacteria according to shared characteristics?

    <p>Number of chromosomes</p> Signup and view all the answers

    Which phylum contains the highest percentage of strains in cultivation?

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

    What is the key characteristic used to identify two distinct serotypes in bacteria?

    <p>Surface antigens recognized by antibodies</p> Signup and view all the answers

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