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
[{'content': 'One of the following enzymes is not a protein \nSelect and explain. \nA. DNAse, B. Abzyme, C. Eco RI, D. Ribozyme', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A ribozyme is a\xa0ribonucleic acid (RNA) enzyme\xa0that catalyzes a chemical reaction. The ribozyme catalyses specific reactions in a similar way to that of protein enzymes.\nAlso called catalytic RNA, ribozymes are found in the ribosome where they join amino acids together to form protein chains. Ribozymes also play a role in other vital reactions such as RNA splicing, transfer RNA biosynthesis, and viral replication.', 'role': 'assistant'}]