Enzymes can catalyze a reaction only if they

Question

Quizplus · Accepted Answer

Enzymes can only catalyze a reaction if they encounter a substrate that fits their active site. The active site of an enzyme is specifically shaped to fit its substrate like a lock-and-key mechanism. Without a substrate that fits, the enzyme cannot catalyze a reaction. The other options are incorrect. Enzymes do not require ATP or a phosphate bound to their active site to function, and they do not require both products in their active site at the same time to catalyze a reaction.

Enzymes Can Catalyze a Reaction Only If They