Human bone does not contain

A. Calcium
B. Chondroitin sulfate
C. Boron
D. phosphate

Check Answer

The correct answer is C. Boron.
Human bone is primarily composed of collagen, a protein that provides the structure and strength of bone, and hydroxyapatite, a mineral complex of calcium and phosphate that gives bone its hardness and rigidity. Other components of bone include water, other minerals like magnesium and sodium, and trace amounts of organic compounds like chondroitin sulfate.
Boron is not typically found in human bone, although it is an essential micronutrient that plays a role in bone health and metabolism. It is found in small amounts in some foods, such as nuts, dried fruits, and vegetables, and is sometimes used in dietary supplements.
Therefore, option C (Boron) is the correct answer.
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