Question

The major constituent of vertebrate bone is

• A. Calcium phosphate
• B. Potassium hydroxide
• C. Sodium chloride
• D. Potassium bicarbonate

Answer 1

The correct option is A Calcium phosphate

Bone is the rigid part that constitutes the vertebral skeleton. It is a connective tissue largely composed of an organic protein collagen and the inorganic mineral hydroxyapatite. Collagen is the fibrous protein that provides the bone with strength and flexibility. Seventy percent of bone is made up of hydroxyapatite that consists of calcium phosphate, calcium carbonate, calcium fluoride, calcium hydroxide and citrate.

So, the correct answer is option A.