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': 'Substitution of which amino acid in the place of glycine would result in increase in UV absorption of a protein solution \nSelect and explain. \nA. Lysine, B. Arginine, C. Tryptophan, D. Histidine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aromatic amino acids (Phenylalanine, Tyrosine, Trytophan) absorb UV light.\nMaximum absorption is by, tryptophan.', 'role': 'assistant'}]