How enzymes affect activation energy and ΔG
How does an enzyme affect the reaction it catalyzes?
Answer D: explanation for every choice
A
Enzymes do not change the free energy difference between reactants and products.
B
The equilibrium constant is unchanged. Equilibrium is simply reached faster.
C
Enzymes are regenerated at the end of each catalytic cycle.
D
Correct. Enzymes stabilize the transition state, lowering activation energy and speeding both directions equally.
TakeawayEnzymes change the rate, not ΔG or Keq.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb25.