Ions & Symbol & Function
Magnesium, Mg2+, component of chlorophyll, ATP synthesis, synthesis of carbs, lipids & nucleic acids, control of many enzymes
Iron, Fe2+, haemoglobin in red blood cells, decomposition of hydrogen peroxide, proteins of electron transport chain in mitochondria, killing bacteria with hydrogen peroxide in neutrophils
Phosphate, PO3-, phospholipidsin cell membrane, nucleic acids (e.g. DNA), control of enzyme activity
Calcium, Ca2+, bones & teeth, muscular contraction, secretion of insulin, blood clotting
