Molecular Biology: Prokaryotes and DNA Replication
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Questions and Answers

Which of the following is present in prokaryotes but not eukaryotes?

  • exons
  • polyribosomes
  • spliceosomes
  • simultaneous transcription and translation (correct)
  • DNA replication is considered semiconservative because the ______ strand will remain as half of the ______ molecule.

  • template, final DNA (correct)
  • antisense, DNA
  • sense, mRNA
  • codon, anticodon
  • The polymerase chain reaction uses Taq polymerase rather than a DNA polymerase from E. coli, because Taq polymerase:

  • can initiate DNA synthesis at a wider variety of sequences
  • can denature a double-stranded DNA template
  • is heat-stable (correct)
  • introduces fewer errors during DNA synthesis
  • Which of the following components is not involved in the process of splicing?

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

    In the context of DNA synthesis, the function of ligase is to ______.

    <p>join Okazaki fragments</p> Signup and view all the answers

    Study Notes

    Prokaryotic Features

    • Prokaryotes have simultaneous transcription and translation, which is not found in eukaryotes.

    DNA Replication

    • DNA replication is considered semiconservative because the template strand will remain as half of the final DNA molecule.

    Polymerase Chain Reaction

    • Taq polymerase is used in PCR instead of E. coli DNA polymerase because it is heat-stable.

    DNA Ligase

    • The function of ligase is to join Okazaki fragments formed during lagging strand synthesis, sealing the gaps between them.

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    Description

    This quiz covers key features of prokaryotes, DNA replication, and related processes such as PCR and DNA ligase. Test your understanding of molecular biology concepts.

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