Molecular Biology Quiz: DNA Replication
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Questions and Answers

In the semiconservative replication of DNA, progeny DNA molecules consist of

  • all molecules with one parental and one new strand (correct)
  • all molecules with two new strands
  • all molecules with interspersed parental and new segments
  • one-half of the molecules with two parental strands and one-half of the molecules with two new strands

    • What is a replication fork?

  • The site of DNA binding
  • A place to bind the unpaired DNA strands to stabilize them
  • A place in the cell that adds new nucleotides to a preexisting chain
  • Y-shaped region where the parental strands of DNA are being unwound (correct)

    • What was the overall conclusion of the Hershey-chase experiment?

  • DNA was responsible for heredity (correct)
  • The ratio of Adenine to thymine was always the same
  • Phage DNA was similar to bacterial DNA
  • Proteins and DNA were responsible for heredity

    • What is the function of DNA polymerase III?

    <p>It adds nucleotide pairs to the growing DNA strand</p> Signup and view all the answers

    Which of the following RNAs contains both a 7-Methyl guanosine triphosphate cap and polyadenylate segment?

    <p>m-RNA</p> Signup and view all the answers

    Study Notes

    DNA Replication

    • Semiconservative replication of DNA results in progeny DNA molecules consisting of one parental strand and one new strand.

    Replication Fork

    • A replication fork is a Y-shaped region where the parental strands of DNA are being unwound.

    Hershey-Chase Experiment

    • The overall conclusion of the Hershey-Chase experiment is that DNA is responsible for heredity.

    DNA Polymerase III

    • DNA polymerase III adds nucleotide pairs to the growing DNA strand.

    mRNA Characteristics

    • mRNA contains both a 7-Methyl guanosine triphosphate cap and a polyadenylate segment.

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    Description

    Test your knowledge of DNA replication, including semiconservative replication, replication forks, and the Hershey-Chase experiment.

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