The enzyme that unwinds DNA during replication is
Correct answer: B. Helicase
- A. DNA polymerase
- B. Helicase
- C. Ligase
- D. Primase
Explanation
Helicase breaks hydrogen bonds between base pairs, unwinding the DNA double helix.
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About Structure of DNA
DNA structure includes nucleotides made of deoxyribose, phosphate and nitrogenous bases, arranged in two antiparallel polynucleotide strands. Questions cover the double helix, phosphodiester and hydrogen bonds, complementary base pairing between adenine and thymine and between guanine and cytosine, and the significance of major and minor grooves.
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