AP Biologyeasymcq1 pt
What happens to most enzymes above their optimal temperature?
A.They denature and lose activity
B.They work faster without limit
C.They convert into new enzymes
D.Their amino acid sequence changes
Explanation
Core Concept
Excess heat breaks the weak bonds holding the fold, so the active site loses its shape and substrates no longer bind — activity collapses.
Correct Answer
AThey denature and lose activity
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