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)
Solution
To determine which enzyme is responsible for building new DNA, we need to consider the function of each enzyme option provided:
- Helicase: Unwinds the DNA double helix.
- DNA Polymerase: Synthesizes new DNA strands by adding nucleotides complementary to the template strand.
- Ligase: Joins Okazaki fragments on the lagging strand.
- Topoisomerase: Relieves strain during DNA unwinding by cutting and rejoining the DNA strands.
- Primase: Synthesizes a short RNA primer necessary for DNA polymerase to initiate DNA synthesis.
- 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.
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