What is the general term for enzymes that catalyze hydrolytic cleavage reactions?

• A. Isomerase
• B. Transferase
• C. Hydrolase
• D. Oxidoreductase

Answer: (C)

The correct answer is the term "hydrolase," which refers to a class of enzymes that catalyze the hydrolytic cleavage of chemical bonds. This involves the addition of water (hydrolysis) to break down substrates into smaller components. Hydrolases are crucial in various biological processes, such as digestion, where they facilitate the breakdown of macromolecules like proteins, fats, and carbohydrates into their constituent monomers.

In the context of enzymatic function, hydrolases encompass a wide range of enzymes, including proteases (which cleave peptide bonds), lipases (which break down fats), and amylases (which hydrolyze starch into sugars). The hydrolytic action is essential in metabolic pathways and cellular signaling.

Other classes of enzymes listed have different functions: isomerases rearrange the molecular structure of compounds, transferases transfer functional groups between molecules, and oxidoreductases are involved in oxidation-reduction reactions, transferring electrons from one molecule to another. Thus, the designation of "hydrolase" specifically identifies enzymes that carry out hydrolysis.