Amylase becomes denatured at an alkaline pH of:__________?
Correct answer: D. 9
- A. 6
- B. 7
- C. 8
- D. 9
Explanation
Salivary amylase is suited to the nearly neutral pH of the mouth and loses its functional shape in strongly alkaline conditions, such as around pH 9. Students may choose pH 8 because it is also alkaline, but pH 9 is the standard textbook value given for denaturation of salivary amylase.
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