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← ScienceWhich consequence results when an enzyme's active site denatures?
A)Substrate binding rate dramatically decreases✓
B)Non-competitive inhibition becomes non-existent
C)Cofactor affinity instantly increases
D)Activation energy remains virtually unchanged
💡 Explanation
Substrate binding is dependent on the active site's shape; when denatured, the enzyme's active site distortion via molecular motion prevents efficient substrate binding, weakening enzyme-substrate interactions. Therefore, the rate is impacted because the decreased binding affinity reduces reaction completion, rather than increasing affinity or leaving activation energy constant.
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