15. Enlisted below are different types of RNAs produced in the cell (Column A) and their functions (Column B), but not in the same order.
Column A Column B
A. Sn RNAs (i) turn off gene expression by directing degradation of selective mRNAs.
B. si RNAs (ii) regulate gene expression by blocking translation of selective mRNAs.
C. mi RNAs (iii) function in a variety of processes including splicing of pre-Mrna
D. Sno RNAs (iv) used to process and chemically modify rRNAs.
Choose the correct combination
(1) A-iv, B-ii, C-i, D-iii (2) A-iii, B-i, C-ii, D-iv
(3) A-iv, B-i, C-ii, D-iii (4) A-iii, B-ii, C-i, D-iv
Matching RNA Types to Their Functions
| Column A (RNA Type) | Correct Function (Column B) | Explanation |
|---|---|---|
| A. snRNAs | (iii) Function in a variety of processes including splicing of pre-mRNA | snRNAs (small nuclear RNAs) are essential components of the spliceosome, which removes introns from pre-mRNA during splicing. |
| B. siRNAs | (i) Turn off gene expression by directing degradation of selective mRNAs | siRNAs (small interfering RNAs) mediate RNA interference by binding to specific mRNAs and causing their degradation, thus silencing gene expression. |
| C. miRNAs | (ii) Regulate gene expression by blocking translation of selective mRNAs | miRNAs (microRNAs) bind to target mRNAs and inhibit their translation or cause their degradation, thereby regulating gene expression post-transcriptionally. |
| D. snoRNAs | (iv) Used to process and chemically modify rRNAs | snoRNAs (small nucleolar RNAs) guide chemical modifications (like methylation and pseudouridylation) of ribosomal RNAs. |
Option (2) A-iii, B-i, C-ii, D-iv matches all the correct functions.
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11 Comments
Riya
June 2, 2025Sir you’ve really made a difference in my learning.” 🤌
Suman bhakar
June 2, 2025Best explanation Sir 👍
Krishma saini
June 2, 2025Best explanation sir 👏 👌
Ekta yadav
June 2, 2025Booster dose for the exam 🫰🏿🫶🏻
Shalu Choudhary
June 2, 2025Thanks sir makes its easy by explanation
priyanka
November 3, 2025option 2 is correct
Santosh Saini
November 4, 2025Option 2nd is correct
Anurag Giri
November 4, 2025A-3, B-1, C-2, D-4
Simran Saini
November 5, 2025Option (2) A-iii, B-i, C-ii, D-iv
Sakshi Kanwar
November 7, 2025SnRNA involved in splicing of mrna
SiRNA in silencing gene expression
MiRNA block translation for gene expression
SnoRNA modification of rRNA
A-iii, B-i, C-ii, D-iv
Muskan Yadav
November 7, 2025Option (2) A-iii, B-i, C-ii, D-iv matches all the correct functions.