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scZoUnD [109]
3 years ago
11

What is insulin's structure? a.quaternary b.secondary c.primary d.tertiary

Chemistry
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

A

Explanation:

Quaternary structure of proteins is composed of two or more polypeptide chains. Insulin has two; one alpha  and one beta chain. The two chains are joined together by disulfide bonds at two points (at cysteines). Other examples of quaternary proteins structures are DNA polymerase and hemoglobin.

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