Question

1. The graph below shows rate of reaction data for 2 different enzymes. One of these enzymes are found in the stomach, the other is found in the mouth.a) Which of these lines is more likely to indicate the enzyme found in the stomach? Explain.b) Both these enzymes have the same optimum pH, TRUE or FALSE?2. Explain, in terms of bonding, why the rate of reaction gradually falls once the pH increases above the optimum rather than denaturing straight away.

Answer 1

Answer: Solid graph

Explanation: This indicates an optimum temperature for human enzyme. Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach.