Question

multiple choice question
keratin and collagen are types of _______ proteins.
o catalyst
o communication
o structural
o carrier

Explanation:

Keratin is a protein that makes up hair, nails, and the outer layer of skin, providing structure. Collagen is the most abundant protein in the body and gives strength and structure to connective tissues like tendons, ligaments, and skin. Both are structural proteins.

Answer:

C. structural