Question

what is the item called that binds to the active site? *
substrate
product
coenzyme
inhibitor

Explanation:

Enzymes are biological catalysts. The active site is a region on the enzyme where the substrate binds. A substrate is the substance upon which an enzyme acts. A product is the result of the enzymatic reaction. A coenzyme is a non - protein compound that is necessary for the functioning of an enzyme. An inhibitor is a molecule that binds to an enzyme and decreases its activity. Since the question is about what binds to the active site, the key concept is the substrate - enzyme interaction.

Answer:

Substrate