Lactose is comprised of –

Correct option is B

Lactose is a disaccharide sugar composed of one molecule of galactose and one molecule of glucose. It is found primarily in milk and dairy products. Lactose is broken down into its component sugars by the enzyme lactase during digestion. If a person lacks sufficient lactase, they may experience lactose intolerance, which leads to gastrointestinal discomfort when consuming dairy products.
Information Booster: Lactose is one of the most common natural sugars found in mammalian milk, including human milk. Its breakdown into glucose and galactose allows the body to absorb the sugars for energy. The lactase enzyme is essential for the digestion of lactose, and when it's deficient or absent, the body cannot properly digest lactose, leading to symptoms such as bloating, diarrhea, and gas, known as lactose intolerance.
Additional Knowledge:
· One molecule of galactose only (Option a) is incorrect as lactose contains both glucose and galactose, not just galactose.
· One molecule each of galactose and fructose (Option c) refers to the composition of another disaccharide, sucrose, not lactose.
· Two molecules of glucose (Option d) describes the structure of maltose, another disaccharide, but not lactose.