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Which property of large, circular lily pads allows them to float on the water's surface?
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1. Introduction to Biology
Introduction to Biology
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Which of the following is a major element found in human bones?
A
Calcium
B
Potassium
C
Iron
D
Sodium
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Identify the major elements that are commonly found in human bones. Recall that bones are primarily composed of a mineralized matrix.
Understand that the primary mineral in bones is hydroxyapatite, which has the chemical formula Ca₁₀(PO₄)₆(OH)₂. This indicates that calcium (Ca) is a key component.
Review the roles of the other elements listed: Potassium (K), Iron (Fe), and Sodium (Na). These elements are important in other physiological processes but are not the primary structural components of bones.
Recognize that calcium is essential for bone strength and structure, as it combines with phosphate to form the rigid framework of bones.
Conclude that the major element found in human bones from the given options is Calcium.
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