DNA Replication and Transcription Concepts Quiz
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Questions and Answers

What is the function of Topoisomerase in DNA replication?

  • To proofread the strand
  • To prevent supercoils (correct)
  • To produce supercoils
  • To synthesize nucleotides

    • What is the role of Primase in DNA replication?

  • To proofread the strand
  • To lay down primers and enable DNA Polymerase III (correct)
  • To remove primers
  • To synthesize nucleotides

    • What is the function of DNA Polymerase III?

  • To fuse ends of nucleotides together
  • To synthesize nucleotides
  • To remove primers
  • To proofread the strand and has an exonuclease activity (correct)

    • What is the purpose of NRTI in HIV treatment?

    <p>To inhibit viral replication by incorporating a nucleotide with no OH group (C)</p> Signup and view all the answers

    What is the role of Ligase in DNA replication?

    <p>To fuse ends of nucleotides together at the lagging strand (B)</p> Signup and view all the answers

    What is the purpose of P53 in cellular reproduction?

    <p>To command apoptotic genes when there’s a malfunction during replication (C)</p> Signup and view all the answers

    What is the role of Mediator in gene transcription?

    <p>It acts as a binding site for gene-specific transcription factors (D)</p> Signup and view all the answers

    Which transcription factor enhances the attachment of RNA polymerase II and elongation factors?

    <p>CREB (B)</p> Signup and view all the answers

    What is the function of TFIIH in transcription?

    <p>It catalyzes the movement of RNA polymerase II (A)</p> Signup and view all the answers

    What is the sequence that marks the end of a transcript for termination?

    <p>AAUAAA (B)</p> Signup and view all the answers

    Which factor is involved in cleaving mRNA downstream of the poly A signal?

    <p>CPSF 75 (D)</p> Signup and view all the answers

    What is the role of NElF in transcription?

    <p>It inhibits P-TEFB (C)</p> Signup and view all the answers

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