The protein enzymes in the stomach work best in a very acidic environment. As the material from the stomach moves
into the small intestines, the pancreas must secrete alkaline buffers into the small intestines. Based on what you know
about pH and protein structure explain why this function of the pancreas is important to digestive function. What will be an ideal response?
ANSWER: Answer will vary, but should be similar to this. Protein molecules have a specific three
dimensional shape that determines its function. Factors such as temperature and pH can affect
this shape and thus influence protein function. The enzymes that function in the stomach
work best in an acidic environment but those in the small intestines work best at a more basic
pH. So the pancreas must secrete alkaline buffers into the small intestines to neutralize the
acidity to allow the small intestine enzymes to function properly.
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