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An enzyme that builds new DNA.Group of answer choiceshelicaseDNA polymeraseligasetopoisomeraseprimasesingle-strand binding protein (SSBP)Next

Question

An enzyme that builds new DNA.

Group of answer choices

  • helicase
  • DNA polymerase
  • ligase
  • topoisomerase
  • primase
  • single-strand binding protein (SSBP)
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Solution

To determine which enzyme is responsible for building new DNA, we need to consider the function of each enzyme option provided:

  1. Helicase: Unwinds the DNA double helix.
  2. DNA Polymerase: Synthesizes new DNA strands by adding nucleotides complementary to the template strand.
  3. Ligase: Joins Okazaki fragments on the lagging strand.
  4. Topoisomerase: Relieves strain during DNA unwinding by cutting and rejoining the DNA strands.
  5. Primase: Synthesizes a short RNA primer necessary for DNA polymerase to initiate DNA synthesis.
  6. Single-strand binding protein (SSBP): Stabilizes unwound DNA strands during replication to prevent them from re-annealing.

Final Answer

The enzyme that builds new DNA is DNA polymerase.

This problem has been solved

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