Final answer:
In coagulation, the soluble plasma protein fibrinogen is converted into the insoluble protein fibrin, forming a mesh that traps blood components and stops bleeding.
Step-by-step explanation:
During blood clot formation, the soluble plasma protein called fibrinogen is converted into the insoluble protein called fibrin. This process is a crucial part of hemostasis, ensuring that the blood clots effectively at the site of vascular injury. The conversion of fibrinogen to fibrin is initiated by the enzyme thrombin, which is activated in the final common pathway of the coagulation cascade.
In the coagulation process, fibrinogen, a water-soluble protein present in blood serum, is converted into fibrin, a non-water soluble protein. Fibrin forms a physical mesh that traps platelets and erythrocytes (red blood cells) to form a blood clot, which is vital for stopping bleeding and initiating wound healing.