American Association of Family and Consumer Sciences (AAFCS) Practice Test 2025 - Free AAFCS Practice Questions and Study Guide

Question: 1 / 400

Which mineral is vital for the formation of hemoglobin in blood cells?

calcium

iron

Iron is essential for the formation of hemoglobin, which is the protein in red blood cells responsible for transporting oxygen throughout the body. Hemoglobin comprises a structure that includes iron atoms at its core, allowing it to bind effectively with oxygen molecules. This binding is crucial for delivering oxygen to tissues and facilitating cellular metabolism. While calcium, potassium, and magnesium play important roles in various bodily functions, they do not have a direct involvement in hemoglobin synthesis. Calcium is primarily known for its role in bone health and nerve function, potassium is vital for muscle contractions and maintaining fluid balance, and magnesium is important for muscle and nerve function, as well as energy production. Therefore, among the options provided, iron is the only mineral that is specifically crucial for the formation of hemoglobin.

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potassium

magnesium

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