Question

Some of the Bile acids are: A. Deoxycholic acid, B. Oxalic acid, C. Taurocholic acid, D. Acetoacetic acid Choose the correct answer from the options given below:

• A. A and C only \
• B. B and D only \
• C. A and B only \
• D. C and D only

Hint:

Bile acids are derived from cholesterol and often end in "-cholic" (such as cholic, deoxycholic, taurocholic, or glycocholic acid).

Answer 1

The Correct Option is A

Step 1: Concept Bile acids are polar, amphipathic sterol derivatives synthesized from cholesterol in the liver. They are stored in the gallbladder and secreted into the intestine to help emulsify dietary fats.

Step 2: Meaning Bile acids are classified as primary (synthesized directly in the liver) or secondary (modified by intestinal bacteria), and they can be conjugated with amino acids to form bile salts.

Step 3: Analysis * Statement A (Deoxycholic acid): A major secondary bile acid produced in the intestine via bacterial dehydroxylation of cholic acid $\rightarrow$ Correct. * Statement B (Oxalic acid): A dicarboxylic acid found in plants and produced as a metabolic waste product in the body, not a bile acid $\rightarrow$ Incorrect. * Statement C (Taurocholic acid): A conjugated primary bile acid formed by linking cholic acid with the amino acid taurine $\rightarrow$ Correct. * Statement D (Acetoacetic acid): A 4-carbon ketone body synthesized by the liver during fatty acid breakdown, not a bile acid $\rightarrow$ Incorrect.

Step 4: Conclusion Therefore, only deoxycholic acid (A) and taurocholic acid (C) are genuine bile acids. This corresponds to option A. Final Answer: (A)