Examlex
Which of the following statements is correct?
Keratin
A type of structural protein found in hair, nails, and the outer layer of skin, providing toughness and water-resistance.
Animal Hair
The filamentous biomaterial that grows from the skin of animals, primarily used for protection, sensory purposes, and heat regulation.
Alpha Helices
A common structural motif in proteins, characterized by a right-handed helix with amino acid residues arranged in a coiled manner.
Pleated Sheets
Pleated sheets are a form of secondary structure found in proteins, characterized by folding of the peptide chain into a series of pleats, primarily stabilized by hydrogen bonds.
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