The activation energy for a reaction
A)is less when enzymes are present.
B)allows greater interaction of substrate with the active site.
C)is needed to begin a reaction.
D)puts the substrate at its transition state.
E)is all of these.

Question

Quizplus · Accepted Answer

The activation energy is the energy needed to start a reaction by bringing the substrates to their transition state. Enzymes lower the activation energy by facilitating greater interaction between substrates and the active site, ultimately putting the substrate at its transition state. Therefore, all the choices are correct.

The Activation Energy for a Reaction