Question

The enzyme which helps to cut one strand of DNA duplex to release the tension of coiling of two strands is?

• A. Topoisomerase
• B. DNA ligase
• C. Helicases or unwindases
• D. DNA Polymerase

Answer 1

The correct option is A

Topoisomerase

Correct option is (A):

1. Normal issues, for example, overwinding (positive supercoiling), bunches, and tangles are settled by topoisomerases by catalyzing the breaking of a couple of strands of DNA.
2. It delivers the supercoiling and torsional strain of DNA presented during the DNA replication and the record is finished by fleetingly cutting and rejoining one strand of the DNA duplex.
3. In this manner, the right response is choice C.

Explanation for incorrect option:

Option B:

1. DNA ligase is a particular sort of chemical, a ligase, that works with the consolidating of DNA strands by catalyzing the development of a phosphodiester bond.
2. It assumes a part in fixing single-strand breaks in duplex DNA in living creatures, yet a few structures, (for example, DNA ligase IV) may explicitly fix twofold strand breaks (for example a break in both reciprocal strands of DNA).

Option c:

1. During DNA replication, the strands separate by unwinds/helicase.
2. The particle is loosened up by DNA loosening up proteins called helicases.
3. The helicases II and III get connected to the logging strand and protein to the main strand.
4. The arrangement of groups is kept away from single abandoned DNA restricting proteins (SSB).

Option D:

1. A DNA polymerase is an individual from a group of chemicals that catalyze the blend of DNA particles from nucleoside triphosphates, the sub-atomic forerunners of DNA.
2. These compounds are fundamental for DNA replication and generally work in gatherings to make two indistinguishable DNA duplexes from a solitary unique DNA duplex. During this cycle, DNA polymerase "peruses" the current DNA strands to make two new strands that match the current ones.