Two of these monosaccharides join by a condensation reaction. The oxygen will also bond to a hydrogen creating a hydroxyl group. Other common disaccharides include lactose maltose and trehalose.
Sugars include glucose galactose fructose maltose lactose.
All monosaccharides have the same general formula of CH 2 O n which designates a central carbon molecule bonded to two hydrogens and one oxygen. A monosaccharide has the formula C6H12O6. Name a pentose monosaccharide. Lactose also known as milk sugar is composed of the monosaccharides galactose and glucose.