Multiple choice general knowledge

What is the main component of bones and teeth?

  1. Calcium Carbonate

  2. Calcium Phosphate

  3. Calcium Sulphate

  4. Calcium Nitrate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bones and teeth are primarily composed of calcium phosphate in the form of hydroxyapatite crystals, which provide hardness and rigidity. This mineral component is embedded in a collagen protein matrix that gives flexibility. Calcium carbonate (A) is found in eggshells and seashells, calcium sulfate (C) in plaster, and calcium nitrate (D) is a fertilizer.

Keep practicing — related questions