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Locomotion and Movement
Question
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Bone is mainly composed of

  • iron and phosphorus

  • sulphur and calcium

  • calcium and phosphorus

  • calcium and magnesium

Answer

C.

calcium and phosphorus

The matrix of bone has 60-70% mineral salts like calcium phosphate (main component), calcium carbonate, magnesium phosphate, chloride and fluoride. 30-40% of matrix is organic matter, chiefly protein ossein.

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