|The substrate binds to the ____ of an enzyme.
|A protein's structure can be revealed by ____ crystallography.
|In some proteins, ____ residues are joined by disulfide bonds.
|Temperature and ____ are factors that affect enzyme activity.
|The alpha helix and ____ are secondary structures of proteins.
|A cofactor binds to an apoenzyme to form an active ____.
|Each of the four subunits of hemoglobin contain one ____ ion.
|A ____ is a non-protein molecule required for enzyme activity.