Correct!

The tertiary structure of a protein refers to the:

A.	Sequence of amino acids
B.	Presence of alpha-helices or beta-sheets
C.	Unique three dimensional folding of the molecule Tertiary structure refers to the overall 3D folding of the polypeptide chain.
D.	Interactions of a protein with other subunits of enzymes
E.	Interaction of a protein with a nucleic acid