Question

Match the types of RNA in Group I with their corresponding function in Group II.
Group I:
P. mRNA
Q. rRNA
R. miRNA
S. tRNA
Group II:
1. Serves as adaptors between mRNA and amino acids during protein synthesis
2. Regulates post-transcriptional gene expression
3. Codes for proteins
4. Forms the core of the ribosome structure and catalyzes protein synthesis

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

Hint:

mRNA → messenger (codes for proteins).
rRNA → ribosomal (structural + catalytic role).
miRNA → regulation of expression.
tRNA → adaptor in translation.

Answer 1

The Correct Option is A

Step 1: mRNA (P) carries the genetic code from DNA and thus codes for proteins → matches with (3).
Step 2: rRNA (Q) forms the core structural and catalytic part of ribosomes, involved in protein synthesis → matches with (4).
Step 3: miRNA (R) regulates gene expression post-transcriptionally, typically by binding mRNA and preventing translation → matches with (2).
Step 4: tRNA (S) acts as an adaptor molecule, carrying amino acids to the ribosome and matching them to codons in mRNA → matches with (1).
Thus, correct match is P-3, Q-4, R-2, S-1 → Option (A).