Q. Which one of the following also acts as a catalyst in a bacterial cell?
A) 5S rRNA
B) snRNA
C) hnRNA
D) 23S rRNA
Explanation
The 23S rRNA is a component of the large prokaryotic (bacterial cell) subunit (50S). The ribosomal peptidyl transferase activity resides in this rRNA acts as a ribozyme (catalytic RNA). In eukaryotic cells, the 60S (28S component) ribosome subunit contains the peptidyl transferase component and acts as the ribozyme.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.