A - Transition state, B - Activation energy in the absence of an enzyme, C - Activation energy in the presence of an enzyme.

A - Transition state, B - Activation energy in the presence of an enzyme, C - Activation energy in the absence of an enzyme.

A - Activation state, B - Activation energy in the absence of an enzyme, C - Activation energy in the presence of an enzyme.

A - Activation state, B - Activation energy in the presence of an enzyme, C - Activation energy in the absence of an enzyme.