This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins bonds and structure, Subject name: Biochemistry
[{'content': 'Which structure of Hb can do function? \nSelect and explain. \nA. Primary, secondary , teiary, B. Primary & secondary, C. Primary, secondary , teiary, quaernary, D. Teiary & quaernary', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In case of any protein, Primary & secondary structures -NO function. Function stas from Teiary structure.', 'role': 'assistant'}]