Question

Non-proteinaceous enzyme that acts as a catalyst for the formation of peptide bond is
OR
"All enzymes are proteins." This statement is now modified because an apparent exception to this biological truth is

• A. Spliceosome
• B. Ribozyme
• C. RNA polymerase I
• D. RNA polymerase III

Answer 1

The correct option is B Ribozyme

Ribozymes or RNA enzymes are catalytic RNA molecules. The first ribozyme discovered was self splicing group I intron. The second catalytic RNA was RNAase P which separates tRNA from hn RNA at their 5' ends. Peptidyl transferase involved in translation of proteins is also catalytic RNA. Telomerase is a ribonulceoprotein enzyme. It is involved in replication of terminal DNA or telomeres.