Practice question · Select all that apply
Which statements about enzymes are correct?
Hints
- Three describe what a catalyst does; one describes something no catalyst can do.
- A catalyst changes how fast equilibrium arrives, never where it lies.
Show the answer
- B. They speed the forward and reverse reactions equally
- C. They are not consumed by the reaction they catalyse
- D. They lower a reaction’s activation energy
Why
Enzymes lower the barrier, emerge unchanged, and accelerate both directions equally, which is exactly why they cannot move the equilibrium. Only the rate of arrival changes, a rule that holds for every catalyst.
Practise What Is Life? The Chemistry of Living Things
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