A scientist suggested that the movement of compound X across a cellular membrane could be sped up by
the addition of enzyme Y. According to Figure 1, an
enzyme speeds the reaction because:
F. the activation energy is lower with the enzyme
than without the enzyme.
G. the activation energy is higher with the enzyme
than without the enzyme.
H. the activation energy is equal with and without
the enzyme.
J. the free energy change is higher with an enzyme
than without enzymes.