Question

enzymes contain a(n) ___ where reactants can bond to react with each other. options: reaction site, active site, substrate site, enzyme site

Explanation:

Enzymes have an active site, which is the region where substrates (reactants) bind and undergo a chemical reaction. The other options (reaction site, substrate site, enzyme site) are not the correct terms used in biochemistry to describe this region of the enzyme.

Answer:

active site