This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Structure and function of protein, Subject name: Biochemistry
[{'content': 'Which is denatured collagen in humans? \nSelect and explain. \nA. Gelatin, B. Homocollagen, C. Tropocollagen, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: heat denatured collagen is gelatin . REFERENCE; DM VASUDEVAN TEXTBOOK SEVENTH EDITION ; Page no;39', 'role': 'assistant'}]