It was found that a reversible inhibitor and a substrate bind an enzyme, but at different sites. the inhibitor was quite potent at reducing enzyme activity, but a scatchard analysis indicated it could not actually bind the enzyme unless the substrate was bound first. these results led to what conclusion? a. it was a competitive inhibitor. [b [u) b. it was a mixed inhibitor. c. it was an uncompetitive inhibitor. d. it was an allosteric modulator. e. it was a mechanism-based inactivator.

The correct option is C (Uncompetitive inhibitor)

Explanation:

Uncompetitive inhibitor takes place when an inhibitor binds at different site (allosteric site) of the enzyme after the substrate forms a complex with the enzyme. The Uncompetitive inhibitors bind to a different site on the enzyme while the substrate binds to the active site on the enzyme. It differs from non-competitive inhibition because non-competitive inhibition can occur with or without the presence of the substrate. Uncompetitive inhibition is also referred to as Anti-competitive inhibition.