Final answer:
The enzyme helicase is responsible for unwinding DNA strands at the origin of replication, an essential step in DNA replication.
Step-by-step explanation:
The enzyme that unwinds DNA is helicase. Helicase separates the DNA strands at the origin of replication, allowing for the replication process to begin.
This activity requires energy, which is often supplied in the form of ATP. Once the strands are separated, other proteins such as single-strand binding proteins stabilize the unwound state.
The action of helicase in unwinding DNA is essential for the proper replication of the genetic material.
option correct e. Helicase