Chromatin Condensation and Gene Transcription Quiz
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Questions and Answers

Which subunit of RNA polymerase II is responsible for trapping the template DNA strand and transcript during formation of the transcribing complex?

  • Clamp domain (correct)
  • Wall domain
  • RPB2 subunit
  • Bridge α helix
  • What ion participates in the catalysis of phosphodiester bond formation during RNA transcription by RNA polymerase II?

  • Na+
  • Ca2+
  • Mg2+ (correct)
  • K+
  • Which region of RNA polymerase II is thought to bend and straighten as the polymerase translocates one base down the template strand?

  • RPB2 subunit
  • Wall domain
  • Clamp domain
  • Bridge α helix (correct)
  • Which of the following is NOT a conserved element that highly regulates RNA polymerase II-transcribed genes?

    <p>Chromatin remodeling proteins</p> Signup and view all the answers

    During RNA transcription, what does the bridge α helix in RNA polymerase II extend across?

    <p>The cleft in the polymerase</p> Signup and view all the answers

    Which element helps couple clamp closure in RNA polymerase II to the presence of RNA during transcription?

    <p>Clamp domain</p> Signup and view all the answers

    What are the core regulatory elements that highly regulate RNA polymerase II-transcribed genes known as?

    <p>Core promoter sequences</p> Signup and view all the answers

    Which type of promoters are shown in the Core promoter elements of non-CpG island promoters in metazoans?

    <p>Non-CpG island promoters</p> Signup and view all the answers

    What site(s) do transcriptional activators bind to in relation to the promoter?

    <p>Proximal binding sites</p> Signup and view all the answers

    What element forces the template DNA to bend before exiting the polymerase during RNA transcription?

    <p>Wall domain</p> Signup and view all the answers

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