Question

Which of the following is/are correct statement(s) ?
(I) $C{a}^{2+}$ ions are important in blood clotting.
(II) $C{a}_3(P{O}_4{)}_2$ is a part of bones.
(III) $3C{a}_3\left(P{O}_4\right).Ca{F}_2$ is a part of enamel of teeth.

• A. (I) and (II)
• B. (II) and (III)
• C. (I) and (III)
• D. (I), (II) and (III)

Answer 1

The correct option is D (I), (II) and (III)

All are correct statements.

(I) $C{a}^{2+}$ ions are important in blood clotting and muscle contraction. Low level of $C{a}^{2+}$ ions increases blood clotting time.

(II) Calcium phosphate $C{a}_3(P{O}_4{)}_2$ is a part of bones. Calcium deficiency causes osteoporosis where the bones becomes soft due to reduced bone mineral density leading to easy fractures.

(III) $3C{a}_3\left(P{O}_4\right)\cdot Ca{F}_2$ is a part of enamel of teeth