The Long,insoluble Threads of Fibrin of a Blood Clot Originated

Question

The long,insoluble threads of fibrin of a blood clot originated from
A)fibrinogen.
B)thrombin.
C)collagen.
D)prothrombin.
E)platelets.

Accepted Answer

Fibrinogen is a soluble protein found in the plasma that is converted into insoluble fibrin during clotting. This conversion is catalyzed by the enzyme thrombin which cleaves fibrinogen to form fibrin monomers which then polymerize to form the stable fibrin meshwork of a blood clot. Collagen and platelets are also involved in the clotting process but do not directly contribute to the formation of fibrin. Prothrombin is a precursor to thrombin and does not directly contribute to the formation of fibrin.