So let's begin with one digestive enzyme. So whenever we ingest different types of food particles, we ingest these macromolecules. So proteins, carbohydrates, lipids, and it's the function of these digestive enzymes to basically break down these large macromolecules into smaller food particles that can be ingested by the individual cells. And these digestive enzymes are initially created in their zymogen form. And that's important because we don't want the digestive enzymes to be activated at all times. We only want to activate these digestive enzymes when we're actually digesting, when we actually eat the food.