5. Acids are any substances that have a pH lower than 7.0. Which enzyme works best in an acidic stomach environment?

A. Enzyme A
B. Enzyme B



Answer :

Final answer:

Enzyme A works best in an acidic stomach environment, exemplified by pepsin's optimal pH of about 1.5.


Explanation:

Enzyme A works best in an acidic stomach environment. Pepsin is the main digestive enzyme in the stomach that works optimally at a pH of about 1.5, which is highly acidic. In contrast, Enzyme B would not function efficiently in an acidic stomach environment due to its optimal pH being different.


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