Which of the following is a component of bile?

• A. Amylase
• B. Bile salts
• C. Hemoglobin
• D. Glucose

Answer: (B)

Bile is produced to help digest fats, and its key components include bile salts. These amphipathic molecules, derived from cholesterol in the liver and often conjugated with glycine or taurine, emulsify fats in the small intestine and form micelles that aid fat digestion and the absorption of fat-soluble vitamins. They are stored in the gallbladder and released when needed.

The other substances listed do not belong to bile: amylase is an enzyme that digests starch and comes from digestive glands, not bile; hemoglobin is the oxygen-carrying protein inside red blood cells; glucose is a simple sugar carried in the bloodstream and used for energy, not a constituent of bile.