The liver produces bile to aid digestion of:

• A. Proteins
• B. Fats
• C. Carbohydrates
• D. Nucleic acids

Answer: (B)

Bile helps digest fats by emulsifying them in the small intestine. Bile salts are amphipathic, so they coat fat droplets and break them into much smaller droplets. This increases the surface area available for pancreatic lipase to work, allowing fats to be broken down into fatty acids and glycerol more efficiently. Bile is produced by the liver and stored in the gallbladder, released into the intestine when fatty chyme enters. It doesn’t digest proteins, carbohydrates, or nucleic acids—the digestion of those nutrients relies on enzymes like proteases, amylases, and nucleases.