Question

Which one of the following is true about enzyme catalysis ?

• A. The enzyme changes at the end of the reaction.
• B. The activation barrier of the process is lower in the presence of an enzyme
• C. The rate of the reaction is retarded in the presence of an enzyme
• D. The rate of the reaction is independent of substrate concentration
  

Answer 1

The correct option is B The activation barrier of the process is lower in the presence of an enzyme

The enzymes are the biomolecules which catalyze the reaction without changing its chemical structure. The activation energy of the reaction is lowered in the presence of the catalyst. The rate of reaction is enhanced in the presence of the enzyme and the rate id dependent on the substrate concentration.

Thus, the correct answer is option B.