Question

multiple choice question
in the given picture of an enzyme, letter a indicates a ______ of the enzyme
substrate
competitive inhibitor
phosphate group
noncompetitive inhibitor

Explanation:

In enzyme - substrate interactions, a competitive inhibitor binds to the active site of the enzyme. A non - competitive inhibitor binds to a site other than the active site. A phosphate group is usually involved in phosphorylation reactions and is not what is depicted here. The orange structure is likely the substrate that fits into the enzyme's active site, and the green structure (A) is a non - competitive inhibitor as it binds to a site other than the active site.

Answer:

noncompetitive inhibitor