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Enzyme Investigation PLAN Protease enzymes are produced in three different areas of the alimentary canal. These three areas are the mouth, stomach and small intestine. The enzyme in the mouth is the saliva produced in the mouth. It acts on chewed pieces of food, beginning the process of digestion. The food leaves the mouth when swallowed and begins to travel down the oesophagus. Muscles in the walls of the oesophagus contract rhythmically to move food from the throat to the stomach. This contraction is the process called peristalsis. When food reaches the stomach physical digestion occurs where there are continual churning movements of the muscular walls. These churning movements reduce food to a creamy paste called chime. Chemical digestion occurs by enzymes and acids being released by the cells of gastric glands. Pepsinogen is firstly released into the stomach. Hydrochloric acid converts the pepsinogen into the enzyme which catalyses the hydrolysis of proteins into...

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