Enzymes have different jobs around the body that are very vital to help the body live. For example they help with digestion, aiding or healing the body, and metabolism. But the main job of the enzyme is to "aid the body" what I mean is if you get cut and you start to bleed it's the enzyme job to get to the wound and help heal it and stop the bleeding. Without the enzyme the body wouldn't be able to last forever.
Hope this helps!