Biology for IGCSE & O level - Enzymes (Section 1 - No. 29)
What does the term 'optimum pH' refer to in the context of enzyme activity?
The pH at which the enzyme is most stable.
The pH at which the enzyme is denatured.
The pH at which the enzyme has maximum activity.
The pH at which the substrate is most stable.
Explanation
Optimum pH is the pH where enzyme activity is at its peak.
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