This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Which of the following is a ribozyme? \nSelect and explain. \nA. Peptidyl transferase, B. Elongation factor 2, C. Primase, D. RNA polymerase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Interestingly, some RNA molecules have intrinsic catalytic activity. The activity of these RNA enzymes, or ribozymes, often involves the cleavage of a nucleic acid. Two ribozymes are the peptidyl transferase that catalyzes peptide bond formation on the ribosome, and ribozymes involved in the RNA splicing.Ref: Harpers Illustrated Biochemistry, 30th edition, page no: 363', 'role': 'assistant'}]