kailemarie15 kailemarie15

21-06-2016
Biology

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what are feathers composed of

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ponyboyhowell ponyboyhowell

21-06-2016

feathers are made from the protein Keratin

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21-06-2016

Feathers are composed of beta-keratins, they are protein strands with hydrogen bonded to beta-pleated sheets and they are further cross-linked by disulphide bridges into an even tougher structure.

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