This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cholesterol synthesis and bile acids, Subject name: Biochemistry
[{'content': 'Bile acids are synthesized from: \nSelect and explain. \nA. Arachidonic acid, B. Linoleic acid, C. Linolenic acid, D. Acetyl CoA', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Bile acids are synthesized from cholesterol (by modification of side chain), which is synthesized from Acetyl CoA. Bile acids consists of Deoxycholic acid, Lithocholic acid and Chenodeoxycholic acid. Bile acids are more appropriately called bile salts Present in deprotonated form Made in liver (RLE is 7-a-Hydroxylase) Stored in gall bladder, Emulsify the dietary fat which increases the surface area.', 'role': 'assistant'}]