Molecular Biology Quiz
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Questions and Answers

What is the role of DNA gyrase in bacteria?

  • Catalyzes translation of mRNA
  • Initiates transcription process
  • Promotes unwinding of DNA during replication
  • Facilitates supercoiling of DNA (correct)
  • Which enzyme is responsible for ATP-dependent negative supercoiling of bacterial DNA?

  • DNA polymerase
  • DNA gyrase (correct)
  • Topoisomerase II
  • RNA polymerase
  • What is the approximate length of the Escherichia coli bacterial chromosome?

  • 1 mm (correct)
  • 5 nm
  • 10 μm
  • 2 cm
  • In DNA replication, what is the function of topoisomerase II?

    <p>Relieves tension in the DNA double helix</p> Signup and view all the answers

    Which of the following accurately describes binary fission?

    <p>DNA replication is semiconservative</p> Signup and view all the answers

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