Question

7. Calcium is not required for?
(a) Strengthening of bones and teeth
(c) Muscle contraction
(b) Blood clotting
d) Conduction of nerve impulses

plz give right ans.​

Answer 1

It's Option d. Calcium play a very important role in clotting as well as in muscle contraction. And also in strengthening of bones and teeth.

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Answer 2

Answer:

Calcium is  required for Strengthening of bones and teeth, Muscle contraction , Blood clotting but not required for Conduction of nerve impulses

So, Calcium is not required for d) Conduction of nerve impulses

Explanation:

• Calcium triggers contraction of Muscles by reaction with regulatory proteins. So,  the absence of calcium prevent muscle contractions.

• Calcium works together with Vitamin K and a protein called fibrinogen in the Blood clotting process. Calcium ion ($Ca^{2+}$) plays a major role in the tight regulation of coagulation cascade that is paramount in the maintenance of hemostasis.

• Calcium is also required for bone formation, maintenance and bone repair along with vitamin D. Calcium is associated with the formation and metabolism of bone. Over 99 percent of total body calcium is found as calcium hydroxyapatite in our bones and teeth, where it provides hard tissue along with strength.