Question

The matrices of bones are made up of ___________.

• A. Calcium and magnesium
• B. Magnesium and phosphate
• C. Calcium and potassium
• D. Calcium and phosphate

Answer 1

The correct option is D

Calcium and phosphate

The correct option is D.
Explanation of the correct option:

1. Bone is a type of rigid connective tissue made up of cells that are embedded in a firm matrix.
2. The matrix of hard bones contains calcium carbonate (0.06%), calcium phosphate (85.62%), magnesium phosphate (1.75%), calcium fluoride (3.57%) and a small percentage of magnesium sulphate.
3. The main function of bone is to provide shape to the body and protect the vital organs of the body.

Final answer:

The matrices of bones are made up of calcium and phosphate.