Keratin is an example of which type of molecule?

Study for the New Mexico Permanent Makeup Exam. Prepare with flashcards and multiple choice questions, each question includes hints and explanations. Get ready for your exam!

Multiple Choice

Keratin is an example of which type of molecule?

Explanation:
Keratin is a structural protein. It forms the tough, resistant fibers that give hair, nails, and the outer layer of skin their strength. Proteins are built from amino acids linked by peptide bonds, and keratin’s high cysteine content creates many disulfide bonds that reinforce its structure. This combination of composition and function makes keratin a protein. Carbohydrates, nucleic acids, and lipids are different kinds of biomolecules with other roles, so keratin isn’t any of those.

Keratin is a structural protein. It forms the tough, resistant fibers that give hair, nails, and the outer layer of skin their strength. Proteins are built from amino acids linked by peptide bonds, and keratin’s high cysteine content creates many disulfide bonds that reinforce its structure. This combination of composition and function makes keratin a protein. Carbohydrates, nucleic acids, and lipids are different kinds of biomolecules with other roles, so keratin isn’t any of those.

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