Gene Expression: Transcription Overview
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Questions and Answers

Which phase of the cell cycle does DNA replication occur?

  • S phase (correct)
  • G2 phase
  • M phase
  • G1 phase

    • What is the first step in the basic flow of DNA Replication?

  • Sugar-phosphate backbones close
  • Hydrogen bonds break
  • Parental strands unwind and separate
  • Parent DNA molecule (correct)

    • Which DNA replication model conserves half of the original double helix in each new DNA molecule?

  • Semiconservative model (correct)
  • Conservative model
  • Dispersive model
  • None of the above

    • What breaks to allow the separation of base pairs during DNA replication?

    <p>Hydrogen bonds</p> Signup and view all the answers

    When must the parental cell duplicate its entire genome in preparation for cell division?

    <p>S phase</p> Signup and view all the answers

    Which enzymes are responsible for binding nucleotides to form new DNA strands in DNA replication?

    <p>DNA Polymerase</p> Signup and view all the answers

    What is the function of helicase in DNA replication?

    <p>Unwinds the parental double helix</p> Signup and view all the answers

    How many phases can DNA replication be divided into?

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

    What are the sites at which single-stranded DNA is exposed during DNA replication?

    <p>Replication forks</p> Signup and view all the answers

    In DNA replication, what does primase do?

    <p>Adds short primer to the template strand</p> Signup and view all the answers

    What did Matthew Meselson and Franklin Stahl rule out regarding DNA replication mechanisms?

    <p>Conservative model</p> Signup and view all the answers

    What is the process of copying DNA information into RNA known as?

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

    Which of the following is NOT a step in gene expression?

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

    What replaces Thymine (T) in RNA sequences?

    <p>Uracil (U)</p> Signup and view all the answers

    Which strand of DNA is used as a template for RNA synthesis?

    <p>Template Strand</p> Signup and view all the answers

    What initiates transcription at specific sites on chromosomes?

    <p>Transcription Factors</p> Signup and view all the answers

    Which strand of DNA is the complement of the RNA that is produced?

    <ul> <li>AntiSense Strand</li> </ul> Signup and view all the answers

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