Question

The enzyme that unwinds that double stranded DNA at the beginning of DNA replication is called. A. Primase. B. DNA polymerase. C. topoisomerase. D. Helicase

Answer 1

Answer: Helicase

Explanation:

DNA is the genetic material which is found in all the organisms except few. It carries the genetic information from one generation to another generation.

The Enzyme named helicase unwinds the double helix model of DNA. It helps in unwinding of the DNA by breaking the hydrogen bonds in between them.

It starts from the origin of replication and forms a replication fork by separating the two strands.These two separated strands are known as the parental strands.  

Answer 2

Answer:

The correct option is D. Helicase is the enzyme that unwinds that double stranded DNA at the beginning of DNA replication.

Explanation:

DNA replication can be described as a process by which the strand of DNA gets duplicated into two new daughter strands.

Helicases can be described as the enzymes whose main function is to unwind the double helix structure of the DNA. The helicases break the hydrogen bonds present between the two strands of DNA. The helicases are the first machinery for DNA replication as they form the replication fork and begin unwinding of the DNA from the origin of replication