O-LevelBiologyEnzymes5090/12 · May/June 2017 · Q41 Mark
Which property of enzymes is explained by the lock and key hypothesis?
AAll enzymes are proteins.
BEnzymes are inactive at very low temperatures.
CHuman enzymes are most active just below 40°C.
DMost enzymes can only catalyse one reaction.
✓ Correct answer
D: Most enzymes can only catalyse one reaction.
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