Final answer:
Phospholipases are enzymes that hydrolyze phospholipids through a process called hydrolysis. This process breaks down polymers into monomers that can be used to synthesize new macromolecules.
Step-by-step explanation:
Phospholipases are enzymes that hydrolyze phospholipids. Hydrolysis is a process that breaks down molecules by adding a water molecule. In the context of the metabolism of cells, hydrolysis is used to break down polymers into monomers, which are then used to synthesize new macromolecules that are more useful to the cells.