Which among the following is essential during coagulation of blood?

Calcium ions

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Prothrombin

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Fibrinogen

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All of these

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Solution

The correct option is D All of these
Blood clotting or coagulation is a mechanism that prevents loss of blood during injury. During injury, the damaged platelets relaese the enzyme, thrombokinase that converts the inactive prothrombin into active thrombin. The thrombin formed converts the soluble fibrinogen into insoluble fibrin threads that form the blood clot. Calcium ions are essential during blood clotting.

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