Which of the Following Statements Regarding Structural Proteins Is True $\beta$

question 9

Multiple Choice

Which of the following statements regarding structural proteins is true?

• A)silk fibroin is made from a repeat of three amino acids where each third amino acid is Gly
• B)\(\beta\)-keratin is composed of peptides that contain mostly \(\alpha\)-helical structure with the exception of short sequences where the peptide folds back on itself
• C)collagen has its own helical structure where three individual peptides are wound around each other in a left-handed helix
• D)generally speaking, structural proteins are soluble in water
• E)none of the above

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