Which minerals are involved in production and use of ATP from glucose?

• A. Mg, PO4
• B. Mg, Ca
• C. Na, K
• D. HCO3, Cl

Answer: (A)

ATP production from glucose relies on two essential minerals: magnesium and inorganic phosphate. Magnesium forms Mg-ATP, the form actually used by kinases, stabilizing the negative charges on the phosphate groups so phosphate transfer can occur smoothly during glycolysis and the mitochondrial ATP synthase reaction. Inorganic phosphate provides the phosphate group that is added to ADP to form ATP in substrate-level phosphorylation and is required by ATP synthase to generate ATP in oxidative phosphorylation. Without these cofactors, the phosphorylation steps that release and form ATP would be inefficient or stalled. The other minerals listed don’t play a direct, universal role in ATP synthesis from glucose: calcium can regulate some enzymes but isn’t a primary cofactor for ATP production; sodium and potassium mainly maintain membrane potential and transport; bicarbonate and chloride are involved in buffering and ionic balance rather than ATP generation.