Biology · Oct / Nov 2020 · Paper 11 · Question 4
Starch digestion occurs in the mouth cavity and in the duodenum but it stops in the stomach. Why is this?
- AAll the starch has been digested before it reaches the stomach.
- BCells in the stomach do not produce amylase.
- CThe pH in the stomach changes the shape of the amylase.
- DThe temperature in the stomach is too high for amylase to work.
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Correct answer: C. The pH in the stomach changes the shape of the amylase.
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