Each enzyme has an optimum pH at which it attains is maximum activity. That optimum pH varies for each enzyme. The optimum range for pepsin is 1.5 - 2; for stomach lipase it is 4.0-5.0. Any change bel

Each enzyme has an optimum pH at which it attains is maximum activity. That optimum pH varies for each enzyme. The optimum range for pepsin is 1.5 - 2; for stomach lipase it is 4.0-5.0. Any change below or above the optimum pH range for a specific enzyme results in a decrease in enzyme action. Which graph best represents the pH and enzyme action for lipase?