How does pH affect enzyme activity?
A. Enzyme activity is highest at extreme pH levels.
B. Each enzyme has a preferred or best pH that they work best in.
C. Enzyme activity is not affected by pH.
D. Enzyme activity increases with increasing pH.
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What is the active site of an enzyme?
A. The part of the enzyme where substrates bind and undergo a chemical reaction.
B. The part of the enzyme that is permanently altered during the reaction.
C. The part of the enzyme that binds to inhibitors.
D. The part of the enzyme that is responsible for its solubility in water.
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