Primary bile acid is: (A) Deoxycholic acid, (B) Lithocholic acid, (C) Chenodeoxycholic acid, (D) None
Answer is C. Bile acids are formed from cholesterol. Types:(a) Primary bile acids: They are synthesized in the liver from cholesterol. They are mainly two:Cholic acid: Quantitatively the largest in an amount in bile.Chenodeoxycholic acid.(b) Secondary bile acids: They are produced in the intestine from the primary bile acids by the action of intestinal bacteria, they are produced by deconjugation and 7-a-dehydroxylation. They are mainly two:Deoxycholic acid: Formed from cholic acid.Lithocholic acid: Formed from chenodeoxycholic acid.Ref: Harper&;s Biochemistry; 30th edition