Which of the following are functions of copper in the body?
I) Synthesis of collagen and elastin.
II) Stabilizing the structure of certain proteins.
III) Transport of iron in the blood.

• A. I & II.
• B. I & III.
• C. II & III.
• D. I, II,& III.

Answer: (B)

Verified step by step guidance

1. Understand the role of copper in the body: Copper is an essential trace mineral that plays a role in various physiological processes, including enzyme function, protein synthesis, and iron metabolism.
2. Analyze statement I: Copper is involved in the synthesis of collagen and elastin because it is a cofactor for the enzyme lysyl oxidase, which is crucial for cross-linking these structural proteins.
3. Analyze statement II: Copper stabilizes the structure of certain proteins by acting as a cofactor for enzymes such as superoxide dismutase, which protects cells from oxidative damage.
4. Analyze statement III: Copper is essential for iron transport in the blood because it is a cofactor for the enzyme ceruloplasmin, which oxidizes iron to its ferric form, enabling its binding to transferrin for transport.
5. Evaluate all statements (I, II, III) and determine which combination of functions aligns with copper's known roles in the body. Cross-reference each statement with established nutritional science principles to identify the correct answer.