Question

3.) when the substrate binds to the active site of the enzyme, the enzyme and the reactant become one unit called the

○ enzyme complex
○ enzyme - reactant complex
○ enzyme - product complex
○ enzyme - substrate complex

Explanation:

Enzymes are biological catalysts. When a substrate binds to the active - site of an enzyme, the resulting unit is called the enzyme - substrate complex. This complex is the intermediate state in an enzyme - catalyzed reaction where the substrate is in close proximity to the enzyme's catalytic groups for the reaction to occur.

Answer:

D. enzyme - substrate complex