During dehydration synthesis between two monosaccharides, what happens?

During dehydration synthesis between two monosaccharides, what happens?

• A. A disaccharide forms
• B. A disaccharide forms and water is released
• C. A water molecule is added
• D. A monosaccharide is broken down

Answer: (B)

During dehydration synthesis two monosaccharides come together by forming a glycosidic bond, and a water molecule is released in the process. This condensation reaction builds a larger carbohydrate, yielding a disaccharide such as maltose or sucrose. The key point is that water is removed as the bond forms, not added. If water were added, the bond would break instead (hydrolysis), splitting the disaccharide back into monosaccharides.

During dehydration synthesis two monosaccharides come together by forming a glycosidic bond, and a water molecule is released in the process. This condensation reaction builds a larger carbohydrate, yielding a disaccharide such as maltose or sucrose. The key point is that water is removed as the bond forms, not added. If water were added, the bond would break instead (hydrolysis), splitting the disaccharide back into monosaccharides.