Trypsin, working in the small intestine, has an optimum pH of about
Correct answer: A. 8
- A. 8
- B. 2
- C. 5
- D. 11
Explanation
The alkaline environment of the duodenum, fed by bicarbonate from the pancreas, suits trypsin at pH 8. Pepsin in the acidic stomach works best near pH 2, so each digestive enzyme matches the pH of the compartment where it acts.
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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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