Question

what is the role of the helicase enzyme in dna replication?
a. it breaks apart the bases.
b. it checks the dna for errors.
c. it ties the chunks of dna together.
d. it adds nucleotides to the chain.

Explanation:

Helicase enzyme in DNA replication unwinds the double - stranded DNA by breaking the hydrogen bonds between the base pairs. This exposes the bases for new strand synthesis. Checking for errors is done by proof - reading enzymes, tying chunks of DNA together is done by DNA ligase, and adding nucleotides to the chain is done by DNA polymerase.

Answer:

A. It breaks apart the bases.