21. Each monosaccharide may be left unsulfated, sulfated once, or sulfated twice. 22. The common dietary monosaccharides galactose, glucose and fructose are all reducing sugars. 23. The new molecule, consisting of two monosaccharides , is called a disaccharide. 24. Aldehyde monosaccharides may be called aldoses; ketone monosaccharides may be called ketoses. 25. Aldehyde monosaccharides may be called aldoses; ketone monosaccharides may be called ketoses. 26. A heteropolysaccharide is a polymer containing more than one kind of monosaccharide residue. 27. When two monosaccharides undergo glycosidic or ether bond. 28. Monosaccharides with eight or more carbons are rarely observed as they are quite unstable.29. Crystalline fructose is the monosaccharide , dried, ground, and of high purity. 30. Monosaccharides contain one sugar unit, disaccharides two, and polysaccharides three or more.
