Which sugar is described as the product of digestion of milk?

Which sugar is described as the product of digestion of milk?

• A. Glucose
• B. Galactose
• C. Fructose
• D. Lactose

Answer: (B)

Milk sugar is lactose, a disaccharide composed of glucose and galactose. When lactose is digested in the small intestine, the enzyme lactase splits it into these two monosaccharides. So the products of digestion of milk are both glucose and galactose. If a single product must be named from the options, galactose is one of the products, but the complete result includes glucose as well. The other options don’t describe the digestion products of milk: lactose is the sugar being digested, and fructose is not produced from lactose digestion.

Milk sugar is lactose, a disaccharide composed of glucose and galactose. When lactose is digested in the small intestine, the enzyme lactase splits it into these two monosaccharides. So the products of digestion of milk are both glucose and galactose. If a single product must be named from the options, galactose is one of the products, but the complete result includes glucose as well. The other options don’t describe the digestion products of milk: lactose is the sugar being digested, and fructose is not produced from lactose digestion.