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': 'Bile salts undergo xenobiotics - \nSelect and explain. \nA. After conjugation with taurine and glycine, B. After conjugation with lysine, C. After conjugation with betaglucuronic acid, D. After conjugation with derived proteins', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Bile acids (primary bile acids) are cholic acid and chenodeoxycholic acid.\nPrior to the secreting them into bile, liver cell conjugates them with one of the two amino acids glycine or taurine to form bile salts, i.e. glycine or taurine conjugates of bile acids are called bile salts, which are secreted into bile.', 'role': 'assistant'}]