What two monosaccharides combine to form sucrose?

Sucrose is a disaccharide formed when two monosaccharides are linked together. The correct combination to form sucrose includes glucose and fructose. These two simple sugars undergo a condensation reaction, where they lose a molecule of water and a glycosidic bond is formed between them.

Glucose is an aldohexose, while fructose is a ketohexose, and when they combine to form sucrose, they create a compound that is typically found in many plants and is commonly known as table sugar. This biochemically significant sugar can be broken down by the enzyme sucrase into its constituent monosaccharides for energy during digestion.

Other potential combinations in the options, such as fructose and galactose, or glucose paired with lactose or maltose, do not yield sucrose because they involve different monosaccharides and thus result in completely different disaccharides or sugars.