What is the sugar found in milk that has the same chemical formula as glucose but differs in configuration?

The sugar found in milk that shares the same chemical formula as glucose (C6H12O6) but differs in configuration is galactose. While glucose and galactose are both monosaccharides and have the same molecular formula, they possess different structural forms, which classifies them as isomers.

Galactose is a component of lactose, the sugar found in milk, and is essential for various biological processes in the body. When lactose is digested, it is broken down into glucose and galactose by the enzyme lactase. The importance of galactose extends to its role in cellular functions and as a source of energy.

Other options, such as fructose and sucrose, do not fit this description. Fructose is a different monosaccharide that is sweeter than glucose and has a different structure. Sucrose, on the other hand, is a disaccharide composed of glucose and fructose, rather than a simple sugar like galactose or glucose.