If the reactant is affected by an enzyme, it then referred to as a SUBSTRATE.
substrates
the region where a reactant binds to an enzyme is known as the active site
The reactant for the enzyme aspartase is aspartic acid. It catalyzes the conversion of aspartic acid into fumaric acid.
Generally in an enzyme-catalyzed reaction, the reactant is called the substrate, which in association with the enzyme forms the product.
The substrate
The reactant that binds to an enzyme's active site is called a substrate.
substrate
Those are called substates.
D. substrate (a specific reactant acted upon by an enzyme is called the enzyme's substrate.)
Reactant.
The active site.
enzyme, impetus, reactant, spur, stimulant