Question

question 27
how would the activity of trypsin change if it were moved from the small intestine to the stomach?
a it would be relatively unaffected.
b the activity of trypsin would increase.
c the activity of trypsin would decrease.
question 28
explain your prediction in the previous question using data from the table.
a the temperature ranges of the locations are the same.
b trypsin functions best at a ph of 2.5.
c the stomach is much more acidic than the small intestine.

Explanation:

Enzymes like trypsin have optimal pH conditions for activity. Trypsin functions best in the slightly alkaline environment of the small intestine. The stomach has a highly acidic environment (low pH). Since enzymes' structures (and thus their activities) can be affected by pH changes (denaturation at extreme pHs for non - optimal conditions), moving trypsin from its optimal (small intestine) to a non - optimal (stomach, very acidic) pH environment would decrease its activity.
For Question 28, the key factor is the pH difference. The stomach is more acidic than the small intestine. Trypsin's optimal pH is not 2.5 (which is very acidic, more like stomach acid for pepsin), and temperature is not the relevant factor here as the question is about moving between stomach and small intestine (both in the human body, similar temperature range).

Answer:

Question 27: C. The activity of trypsin would decrease.
Question 28: C. The stomach is much more acidic than the small intestine.