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': 'Serine is produced in human from - \nSelect and explain. \nA. Glycine, B. Methionine, C. Homocysteine, D. Homoserine', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., GlycineSerine is conveed to glycine and after that its metabolism is similar to glycine. Conversion of serine to glycine is reversible reaction; therefore, serine is synthesized also from glycine.", 'role': 'assistant'}]