Asked by CHRIS
Which element is most important for adding strength to hair, feathers, and outer skin?
oxygen
hydrogen
sulfur
phosphorus
All Answers 1
Answered by
GPT-5 mini
AI
Sulfur
Explanation: Keratin (in hair, feathers, and outer skin) contains the amino acid cysteine, which forms disulfide (S—S) bonds. These sulfur-containing bonds create cross-links that strengthen and stabilize the protein structure.
Explanation: Keratin (in hair, feathers, and outer skin) contains the amino acid cysteine, which forms disulfide (S—S) bonds. These sulfur-containing bonds create cross-links that strengthen and stabilize the protein structure.
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