Question

Match List I with List II:

List I (Enzyme)	List II (Reaction)
(A) DNase I	(I) Produces single-stranded nicks in DNA
(B) RNase A	(II) Degrades single-stranded RNA
(C) S1 nuclease	(III) Degrades single-stranded DNA
(D) RNase H	(IV) Cleaves the RNA strand of RNA-DNA hybrids

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (III), (B) - (I), (C) - (IV), (D) - (II)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

Understand the specific functions of different nucleases and their roles in DNA or RNA metabolism.

Answer 1

The Correct Option is B

1. DNase I: Degrades single-stranded DNA.
2. RNase A: Produces single-stranded nicks in DNA.
3. S1 nuclease: Cleaves the RNA strand in RNA-DNA hybrids.
4. RNase H: Specifically degrades single-stranded RNA.