What is produced during dehydration synthesis between two monosaccharides?

• A. A disaccharide forms
• B. A disaccharide forms and water is released
• C. Water is added to the reaction
• D. A monosaccharide is split into simpler sugars

Answer: (B)

Dehydration synthesis bonds two monosaccharides by removing a water molecule, forming a glycosidic linkage and producing a disaccharide. The key idea is that a water molecule is released as the covalent bond forms between the sugars. This is how larger carbohydrates are built in biology. In contrast, hydrolysis would add water to break a disaccharide into two monosaccharides, so that option would describe a different process. Therefore, the correct result is the formation of a disaccharide with water released.