CBSE Class 10 Answered

The fate of the digestive enzymes is unknown but they are generally thought to be inactivated or reabsorbed.

The traditional understanding is that an entirely new complement of digestive enzymes is secreted by glands like the pancreas into the small intestine with each meal. This is thought to be necessary because, like food itself, these enzymes are degraded during digestion. But now it has been suggested that digestive enzymes can be absorbed into blood, reaccumulated by the glands, and reutilized, instead of being reduced to their constituent amino acids in the intestines.