This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Ubiquitin is a key molecule in protein degeneration. Ubiquitinated proteins are degraded by \nSelect and explain. \nA. Chaperone, B. Protease, C. Proteasome, D. Caspase', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ubiquinated proteins are degraded by Proteasomes. Abnormal proteins and aged normal proteins conjugate to the polypeptide ubiquitin and then it marks them for degradation(Ubiquitination). The Ubiquitinated proteins are degraded by Proteasomes. Proteasome inhibitor, Boezomib, is used in multiple myeloma and hepatocellular carcinoma Ref: Harper's illustrated Biochemistry 31st edition Pgno: 664, 1434", 'role': 'assistant'}]