MCQ
Q.
The chemical substance present in bones and teeth is:
Correct Answer: C
The chemical substance present in bones and teeth is Calcium Phosphate or Ca3(PO4)2.
- Calcium phosphate is fundamental to the formation of bone and teeth.
- It is essential for achieving optimal peak bone mass in the first 2–3 decades of life and for the maintenance of bone in later life.
- Bones:-
- Bones are mostly made of collagen, a type of protein.
- Calcium phosphate, a mineral, is the other main component of the bones.
- Collagen gives the bones a soft framework, while calcium phosphate is what makes them hard and strong.
- Bones are made of living tissues, so old bone tissue is broken down and removed, and then new tissue is created to replace the old.
- Teeth:-
- Enamel – the hard, outer layer of your teeth – is made of minerals like calcium phosphate.
- Enamel is harder than the bones. It's the hardest substance in the whole body.
- However, unlike the bones, the teeth enamel doesn't contain any living tissues and so can't heal on its own.
