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: Biochemistry
[{'content': 'Which amino acids are present in collagen? \nSelect and explain. \nA. Glycine and cysteine, B. Glycine and proline, C. Glycine and arginine, D. Arginine and tryptophan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The amino acid present in large quantities in collagen are GLYCINE, PROLINE and HYDROXYPROLINE.\nApproximately 1/3rd of the amino acid are contributed by Glycine\xa0i.e every 3rd amino acid in collagen is GLYCINE.\nReference :- Satyanarayana 4th Edition,\xa0Pg no. 488', 'role': 'assistant'}]