All of the following statements regarding enzymes are true EXCEPT:
A) Enzymes allow molecules to react in metabolism by lowering activation energies.
B) Enzymes are very sensitive to environmental conditions that influence the weak chemical bonds responsible for their three-dimensional structure.
C) Some enzymes change shape when regulator molecules, either activators or inhibitors, bind to specific allosteric receptorsites.
D) Enzymes are carbohydrates that function as agents that change the rate of reaction without being consumed in the reaction.
E) Each type of enzyme has a unique shaped active site that gives it specificity.