Choose the statement that best describes the function of copper.

Choose the statement that best describes the function of copper.

• A. It is involved in taste perception.
• B. It is a component of the thyroid hormone.
• C. It is necessary for the formation of hemoglobin.
• D. It enhances insulin activity.

Answer: (C)

Copper’s big job is as a cofactor for enzymes that manage iron and help put iron into hemoglobin. One key copper-containing enzyme, ceruloplasmin, acts as a ferroxidase that converts iron from the ferrous (Fe2+) to ferric (Fe3+) form. This oxidation is essential for iron to bind to transferrin and be transported to developing red blood cells where it’s used to form heme, the core component of hemoglobin. When copper is insufficient, iron can’t be mobilized effectively, iron delivery to the bone marrow is impaired, and hemoglobin formation suffers, leading to anemia. So saying copper is necessary for the formation of hemoglobin directly reflects its role in iron metabolism and heme synthesis. Taste perception isn’t a primary function of copper (that role is more closely linked to zinc). Thyroid hormone relies on iodine for production, not copper. Insulin activity is influenced by many factors, but copper isn’t a direct, primary enhancer of insulin action.

Copper’s big job is as a cofactor for enzymes that manage iron and help put iron into hemoglobin. One key copper-containing enzyme, ceruloplasmin, acts as a ferroxidase that converts iron from the ferrous (Fe2+) to ferric (Fe3+) form. This oxidation is essential for iron to bind to transferrin and be transported to developing red blood cells where it’s used to form heme, the core component of hemoglobin. When copper is insufficient, iron can’t be mobilized effectively, iron delivery to the bone marrow is impaired, and hemoglobin formation suffers, leading to anemia. So saying copper is necessary for the formation of hemoglobin directly reflects its role in iron metabolism and heme synthesis.

Taste perception isn’t a primary function of copper (that role is more closely linked to zinc). Thyroid hormone relies on iodine for production, not copper. Insulin activity is influenced by many factors, but copper isn’t a direct, primary enhancer of insulin action.