Question

The diagram shows the effect of an enzyme working in the human digestive system.

What would reduce the rate of production of amino acids?

• A. removing the amino acids as they are formed
• B. increasing the amount of protein
• C. raising the temperature to $37.1{}^{\circ }C$
• D. raising the pH to $4.5$

Answer 1

Answer: (D)

The given enzyme is pepsinogen which is a proteolytic enzyme in the stomach. The activity of an enzyme can be affected by a change in the conditions which can alter the tertiary structure of the protein. Enzymes generally function in a narrow range of temperature and pH. Each enzyme shows its highest activity at a particular temperature and pH called the optimum temperature and optimum pH.