VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.

The digestive system is the series of tubelike organs ... process of chemical digestion using specialized proteins called enzymes. Secreted at various points along the digestive tract, enzymes ...

The changes are usually permanent. Enzymes work inside and outside cells, for instance in the digestive system where cell pH is kept at 7.0 to 7.4. Cellular enzymes will work best within this pH ...