DNA Structure and Heredity Quiz
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Questions and Answers

Which statement about base pairing in DNA is correct?

  • Thymine always pairs with Cytosine via 3 hydrogen bonds.
  • Adenine pairs with Guanine via 2 hydrogen bonds.
  • Guanine pairs with Thymine via 3 hydrogen bonds. (correct)
  • A small base pairs with a large base to keep the strands far apart.

    • In double-stranded DNA, the strands run in opposite directions. Which direction does the 5’ end point towards?

  • The 3’ end of the complementary strand. (correct)
  • The 3’ end of the same strand.
  • The 5’ end of the same strand.
  • The 5’ end of the complementary strand.

    • What enzyme is responsible for unwinding the double helix during DNA replication?

  • DNA ligase
  • Primase
  • DNA polymerase
  • Helicase (correct)

    • During DNA replication, which enzyme is responsible for synthesizing short RNA primers?

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

    What is the function of DNA ligase in DNA replication?

    <p>Joining Okazaki fragments on the lagging strand</p> Signup and view all the answers

    Which enzyme is responsible for proofreading and correcting errors in newly synthesized DNA?

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

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