GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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oxygen
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carbon
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calcium
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phosphorous
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Detailed explanation-1: -Answer: Human bone does not contain Oxygen. Explanation: Animals have significant sites for storing elements in their mineralized tissues, including their bone, teeth, antlers, and horn.
Detailed explanation-2: -The inorganic composition of bone (bone mineral) is primarily formed from salts of calcium and phosphate, the major salt being hydroxyapatite (Ca10(PO4)6(OH)2, hence Ca, P and O are found in bone. Also, bone is roughly 15% carbon by weight, hence Carbon is also found.
Detailed explanation-3: -These tissues contain necessary elements, both major, such as calcium (Ca), phosphorus (P), magnesium (Mg) and sulphur (S), and trace elements, such as iron (Fe), zinc (Zn), manganese (Mn) and cadmium (Cd).
Detailed explanation-4: -The correct answer is D) chondroitin sulphate.