Magnesium () and Calcium () play distinctly different but essential roles in biological systems. Whi — s Block Elements Chemistry Question

💡 Solution & Explanation

Magnesium ($Mg^{2+}$) is absolutely required as a cofactor for all enzymes transferring phosphate groups via ATP, and is central to chlorophyll. Calcium ($Ca^{2+}$) is the primary component of bones/teeth and is essential for blood clotting and neuromuscular signaling.