1. In sucrose, the monosaccharide building blocks are fructose and glucose. 2. Historically it was also used to determine the structure of monosaccharides . 3. Glycans usually consist solely of O-glycosidic linkages of monosaccharides . 4. *Are you asking why it might contain polysaccharides and monosaccharides ? 5. It is a heptose, a monosaccharide with seven carbon atoms. 6. Products of the reaction are the constituent monosaccharides glucose and fructose. 7. The most important monosaccharide , glucose, is a hexose. 8. Examples of monosaccharides are glucose, fructose, and glyceraldehyde. 9. This includes all monosaccharides and many disaccharides, including lactose and maltose. 10. It is a naturally occurring monosaccharide , specifically a hexose.