Which disaccharide is produced when glucose and glucose combine?

When glucose molecules combine, they form the disaccharide known as maltose. This process occurs through a glycosidic bond, specifically an α-1,4-linkage between the two glucose units. The formation of maltose is a result of a condensation reaction, which involves the removal of a water molecule during the bonding process.

Maltose is often found in foods such as malted products and is also produced during the digestion of starches. Understanding that maltose specifically consists of two glucose molecules is essential for recognizing its role in carbohydrate metabolism and nutrition.

The other options represent different disaccharides formed from different combinations of monosaccharides. Galactose combines with glucose to form lactose, which is found in milk. Sucrose is formed from glucose and fructose, commonly found in table sugar. Thus, maltose stands out as the correct answer due to its specific composition of two glucose units.