Paper 2 · November 2019 · Enzymes and the lock-and-key hypothesis
Why are enzymes efficient even in small quantities?
AThey are not used up in the reaction and can be reused
BThey only work when present in very large amounts
CThey change permanently with each reaction they catalyse
DThey react only once and are then destroyed
Explanation
Enzymes are not used up and can be reused.
Derived from ZIMSEC Biology 4025/2 Paper 2 Theory, November 2019, Q1