Sucrose, ordinary table sugar, is a disaccharide assembled from:

1. A disaccharide is two monosaccharides joined by a glycosidic bond. 2. Sucrose is the most common disaccharide. 3. Its two monomers are glucose and fructose. 4. Glucose with galactose gives lactose instead, and ribose and deoxyribose are nucleic acid sugars. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 3 'Biological Macromolecules', sections 3.1-3.5_