3.2.1(contd) Hydrolases: catalyzing the cleavage by the introduction of water. bases: catalyzing reactions involving removal of a group to form a double bond or addition of groups to double bonds. (eg.2) somerase: catalyzing reactions nvolving intramolecular rearrangements Ligases: catalyzing reactions joining together two molecules3.2.1 (cont’d) Hydrolases: catalyzing the cleavage by the introduction of water. Lyases: catalyzing reactions involving removal of a group to form a double bond or addition of groups to double bonds. (e.g.?). Isomerases: catalyzing reactions involving intramolecular rearrangements. Ligases: catalyzing reactions joining together two molecules