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: Pathology
[{'content': 'In muscle hyperophy alpha myosin changes to ? \nSelect and explain. \nA. Beta, B. Gamma, C. Theta, D. Delta', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Beta During muscle hyperophy the alpha isoform of myosin heavy chain is replaced by the beta isofom, which has a slower, more energetically economical contraction.', 'role': 'assistant'}]