Why does the enzyme trypsin get deactivated when introduced in the gastric juice of the stomach?

The answer in this case is the optimum pH for trypsin is about 8.0, which is the pH of the intestine, whereas the pH of the gastric juice is 1.5-2.0, which is highly acidic. The pH of the stomach is low due to the secretion of acid in order to break food down and provide an optimum pH for other enzymes.

Explanation:

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.