1. The change in enzyme shape from the binding of a noncompetitive inhibitor is an example of allostery. Allosteric regulation occurs when a non-substrate molecule binds or modifies an allosteric site, which is a site other than the active site of an enzyme, inducing the enzyme to change its shape. When the inhibitor releases, the enzyme returns to its original conformation, allowing the substrate to bind to the active site and convert into products. 2. Allosteric regulators can be inhibitors or