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A collagen triple helix is what kind of protein structure? a Primary b Seconday c Tertiary...

A collagen triple helix is what kind of protein structure?

a Primary

b Seconday

c Tertiary

d Quaternary

I've been stuck on this for a long time, and figured I'd ask here so I don't waste any more time.

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Answer #1

Option b is correct because It is a major shape in secondary structure, it is composed of three polypeptide chain twisted around each other.

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