How does the concept of the enzyme-substrate complex in the Michaelis-Menten model differ from earlier theories?

• A. It emphasizes the formation of a transient complex rather than a permanent modification.
• B. It proposes that enzymes act as catalysts without forming complexes.
• C. It assumes enzymes are only active at high temperatures.
• D. It suggests enzymes are consumed in the reaction.

Answer: (A)