3. Much of the human digestive process takes place in the stomach and small inte

Question

3. Much of the human digestive process takes place in the stomach and small intestine. Glands secrete enzymes that break protein chains by chemical reactions. Pepsin and trypsin are two important digestive enzymes. The effect of pH on the activity of these enzymes can be determined by analyzing the data below.

a. Why is the percent maximum activity plotted on the y axis rather than on the xaxis?

b. At what pH is pepsin most active? Trypsin?

c. If pepsin and trypsin had to function together, what pH would produce the highest activity?

Explanation / Answer

a). percent maximum activity plotted on the y axis to show concavity of grafh b). pepsin pH = 1.5 ; trypsin pH = 6.5 c). ph = 6.5

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