Final answer:
B) The reaction is faster than the same reaction in the absence of the enzyme. Enzyme-catalyzed reactions are faster than the same reaction without an enzyme because enzymes lower the activation energy of the reaction. This allows the reaction to occur more rapidly and at lower temperatures than the same reaction in the absence of an enzyme.
Step-by-step explanation:
The true statement about enzyme-catalyzed reactions is B) The reaction is faster than the same reaction in the absence of the enzyme. Enzymes lower the activation energy of a chemical reaction, allowing the reaction to occur more quickly compared to the same reaction without an enzyme. This allows the reaction to occur more rapidly and at lower temperatures than the same reaction in the absence of an enzyme. The enzyme provides an alternate pathway with a lower energy barrier, enabling the reaction to proceed at a faster rate.
Enzymes catalyze reactions by lowering the activation energy required for the reaction to proceed. This allows the reaction to occur more rapidly and at lower temperatures than the same reaction in the absence of an enzyme. Enzymes do not alter the free-energy change of the reaction or release more free energy; instead, they facilitate the transition state and increase the reaction rate. Additionally, enzymes themselves are not consumed or changed in the reaction process and do not require energy input for activation.