Collagen is the most abundant protein in the human body and its main role is
- A. catalysing reactions
- B. providing tensile strength in skin, tendon and bone
- C. transporting oxygen
- D. storing genetic information
Explanation
Its triple helix of three chains wound together gives collagen enormous tensile strength, which is why tendons and ligaments resist stretching. Vitamin C is needed for its synthesis, and a deficiency produces the weakened connective tissue of scurvy. Genetic information is stored by nucleic acids rather than proteins.