Question

Correctly match the Enzyme with its respective Function. 

 

• A. P-2; Q-4; R-1; S-3
• B. P-1; Q-4; R-2; S-3
• C. P-2; Q-1; R-4; S-3
• D. P-3; Q-2; R-1; S-4

Hint:

Enzymes like gyrase, glycosylase, and DNA ligase play crucial roles in maintaining DNA structure and integrity, while deadenylase is involved in RNA decay.

Answer 1

The Correct Option is A

In this question, we need to match enzymes with their respective functions.

Step 1: Gyrase
Gyrase is an enzyme that introduces negative supercoils into DNA, thus allowing one strand of DNA to rotate around the other. This is its function as a topoisomerase.
Thus, \( \boxed{P-2} \).

Step 2: Deadenylase
Deadenylase is an exoribonuclease that removes the poly(A) tail from mRNA molecules, which is crucial for mRNA degradation.
Thus, \( \boxed{Q-4} \).

Step 3: Glycosylase
Glycosylase removes damaged bases from DNA by cleaving the bond between the sugar and the base, which is essential for base excision repair.
Thus, \( \boxed{R-1} \).

Step 4: DNA ligase
DNA ligase catalyzes the formation of phosphodiester bonds between the 3′-OH and 5′-phosphate ends of adjacent nucleotides in DNA, which is crucial for DNA repair and replication.
Thus, \( \boxed{S-3} \).

Thus, the correct matching is:
\( P-2 \)
\( Q-4 \)
\( R-1 \)
\( S-3 \)

Final Answer:
The correct answer is \( \boxed{A} \).