Which of the Following Statements About Quaternary Structure Is TRUE

Multiple Choice

Which of the following statements about quaternary structure is TRUE?

A) Quaternary structure is the position of subunits in the overall structure of a protein.
B) All proteins have quaternary structure.
C) Quaternary structure is unaffected by acids or heat.
D) Quaternary structure is determined by the same interaction that holds an α-helix together.
E) Quaternary structure is how prosthetic groups are held in a protein.