Which mineral is most associated with organ structure, nutrient transport and energy utilization?

• A. A Sulfur
• B. B Protein
• C. C Phosphorus
• D. D Calcium

Answer: (C)

The key idea here is how minerals support structure, transport, and energy use in the body. Phosphorus stands out because it forms the mineral component of bone as phosphate in hydroxyapatite, helping give bones and teeth their structure. It also appears in molecules central to energy transfer—ATP and ADP—where the phosphate groups store and release energy needed for most cellular processes. Additionally, phosphate is a part of phospholipids that make up cell membranes, which are essential for nutrient transport into and out of cells. While sulfur is important for protein structure and calcium is crucial for bones and signaling, phosphorus uniquely links bone structure with energy metabolism and membrane-based transport, making it the best fit for all three roles.