Answer:
It is referred to as a hydration/condensation reaction because this reaction involves the production of a water molecule as a by-product of the formation of the glycosidic bond. When two monosaccharides join, the 4’ C of one monomer forms a covalent bond the 1’ C of the other. One Carbon loses an –OH while the other a –H during the formation of this bond. An H+ and an OH- then combine to form a water molecule.