Define Classification of functions of minerals?

 The varied functions of minerals can be grouped under four general physiologic roles viz.

• Structural: They form an integral part of structures such as the bones/skeleton, blood etc.
• Catalytic: Certain minerals are required as constituents of enzymes, co-enzymes in various metabolic pathways.
• Cellular: Some are necessary for membrane stability, as well as, inter and intra cellular transport mechanisms.
• Others: They play an important role muscle contraction, nerve transmission etc.