What is created when glucose combines with another glucose molecule?

When glucose combines with another glucose molecule, the result is maltose, which is a disaccharide. This occurs through a condensation reaction, also known as a dehydration synthesis, where a water molecule is released as a bond is formed between the two glucose units. Maltose is commonly found in malted foods and beverages, such as beer and malted milk.

The formation of maltose specifically highlights the ability of glucose to link together to form more complex carbohydrates. In contrast, fructose is a different monosaccharide and is not formed from glucose. Sucrose is a disaccharide formed from glucose and fructose, whereas lactose is formed from glucose and galactose. Each of these compounds involves different monosaccharide combinations and therefore does not directly result from the combination of two glucose molecules.