Biology / Unit 3 Bio 0520 short lesson, about 20 seconds
Temperature, pH, and Enzyme Activity
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The idea
Each enzyme has an optimal temperature and pH at which its active site binds substrate most effectively, with activity falling off outside that range.
In practice
Digestive enzymes in the stomach work best near pH 2, while most enzymes elsewhere prefer a near-neutral pH.
Where people slip
Raising temperature speeds a reaction only to an enzyme's optimum — beyond it, activity drops.
Your place on the trail
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