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Test: MCAT Biology
| 8. | Which statement best describes the function of the enzyme DNA helicase? |
It begins replication of the leading strand during DNA synthesis.
It proofreads the newly synthesized DNA for errors.
It opens and unwinds the DNA double helix by disrupting the hydrogen bonds.
It links nucleotide subunits together.
It prevents excess twisting of the DNA during replication.
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