Question

Which of the metallic ions is essential for blood clotting?

• A. Na${}^{+}$
• B. Ca${}^{++}$
• C. K${}^{+}$
• D. Fe${}^{++}$

Answer 1

Answer: (B)

Ca${}^{++}$

Calcium ions along with vitamin K are essential for clotting process as all the reaction in the clotting process take place in the presence of calcium ions. It is very important for the conversion reaction of prothrombin into the thrombin.

Therefore, the correct answer is option B.