Multiple choice general knowledge science & technology

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

Calcium phosphate (specifically hydroxyapatite) is the primary mineral component of bones and teeth, providing hardness and strength. Bones are about 60-70% mineral (mostly calcium phosphate) and 30-40% organic matrix (mostly collagen).

Keep practicing — related questions