This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
[{'content': 'Skeletal frame work of a cell is maintained by: \nSelect and explain. \nA. Nucleus, B. Microtubules, C. Ribosomes, D. Mitochondria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Microtubules(Ref: Ganong, 25th ed/p.39)Microtubules provide structural support that can determine the shape of the cell and resist forces that tend to deform it', 'role': 'assistant'}]