Expected products of hydrolysis of Lactose are:

Glucose and Galactose

The correct answer is option 2. Glucose and Galactose.

Lactose is a disaccharide composed of two monosaccharides: glucose and galactose. It is commonly found in milk and dairy products. When lactose undergoes hydrolysis, it is broken down into its constituent monosaccharides through the addition of water.

The hydrolysis of lactose occurs in the presence of an enzyme called lactase, which is produced in the small intestine. Lactase catalyzes the hydrolysis reaction, breaking the glycosidic bond that links the glucose and galactose molecules in lactose. This process results in the separation of glucose and galactose.

The reaction can be represented as follows:


This hydrolysis reaction is important for the digestion of lactose-containing foods. Some individuals have reduced levels of lactase enzyme activity, leading to lactose intolerance. In such cases, the undigested lactose can cause symptoms such as bloating, gas, and diarrhea.

Overall, the hydrolysis of lactose yields the monosaccharides glucose and galactose, which can be absorbed by the intestine and utilized for energy by the body.