What is the role of dna helicase during dna replication?
to unwind the duplex dna
to attach primers to the replicating strands
to add bases in the sugar-phosphate backbone

The correct answer is to unwind the duplex DNA.

Explanation:

DNA helicase is the first essential enzymes during replication which unwinds the double stranded DNA at the origin of replication.

DNA helicase works in a manner as follows:

1. Helicase binds to the origin of replication where synthesis will start.

2. Enzyme starts unwinding the double-stranded DNA by melting the hydrogen bonds between them using energy in the form of ATP.

3. Enzyme continues the process of unwinding the DNA by forming a structure called the replication fork.

Thus, the correct answer is to unwind the duplex DNA.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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