This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which RNA has splicing activity 
Select and explain. 
A. m RNA, B. mi RNA, C. r RNA, D. sn RNA
D: sn RNA
Answer: D: sn RNA 
Explanation: sn RNA (small nuclear RNA) acts as Ribozyme. (RNA with enzymatic activity) It has splicing activity and is involved in mRNA processing.