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

DNA ligase

No worries! We‘ve got your back. Try BYJU‘S free classes today!

DNA Polymerase I

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Topoisomerase

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Swielases (helicase or unwindases)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Topoisomerase
Common problems such as overwinding (positive supercoiling), knots, and tangles are resolved by topoisomerases by catalyzing the breaking of one or two strands of DNA. It releases the supercoiling and torsional tension of DNA introduced during the DNA replication and transcription is done by transiently cleaving and rejoining one strand of the DNA duplex.
Thus, the correct answer is option C.

Suggest Corrections

Similar questions

Q. The enzyme, which helps to cut one strand of DNA duplex to release tension of coiling of two strands is

Q. Match List I(Enzyme) with List II(Function) and select the correct answer using the codes given the lists.

List-I	List-II
a. DNA Ligase	$1$ . Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$2$ . End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$3$ . Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$4$ . Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

Q. Assertion :Restriction enzymes cut the strand of DNA to produce sticky ends. Reason: Stickiness of the ends facilities the action of the enzyme DNA polymerase.

Q. The two strands of a DNA duplex are

Match the following enzymes of DNA replication with their respective functions:
$\begin{matrix} p . D N A p o l y m e r a s e & i . H e l p s u n z i p t h e D N A d o u b l e h e l i x q . D N A l i g a s e & i i . S e a l s n i c k s b e t w e e n O k a z a k i f r a g m e n t s r . D N A h e l i c a s e & i i i . L a y s R N A p r i m e r s t o w h i c h p o l y m e r a s e c a n a d d n u c l e o t i d e s s . P r i m a s e & i v . A d d s n u c l e o t i d e s t o t h e f r e e 3^{'} e n d o f R N A p r i m e r s \end{matrix}$

Join BYJU'S Learning Program