Which Statement About Quaternary Structure Is TRUE

question 95

Multiple Choice

Which statement 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.

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Definitions:

Trabeculae Carnea

A series of muscular ridges found inside the ventricles of the heart, contributing to the heart's contractile force.

Epicardium

The outermost layer of the heart wall composed of connective tissue and fat, serving as a protective layer.

Parietal Pericardium

The outer fibrous layer of the pericardium, a double-walled sac containing the heart and the roots of the major blood vessels.