Which one of the following is necessary to start clotting of blood?

Question

Which one of the following is necessary to start clotting of blood? (A) heparin (B) serotonin (C) thromboplastin and Ca++  (D) fibrinogen and prothrombin

Tardigrade Admin · Accepted Answer

Thrombin facilitates the formation of the enzyme prothrombinase which converts prothrombin into thrombin.

Q. Which one of the following is necessary to start clotting of blood?

heparin

serotonin

thromboplastin and $C a^{++}$

fibrinogen and prothrombin

Thrombin facilitates the formation of the enzyme prothrombinase which converts prothrombin into thrombin.