AIIMS 2018 Zoology Blood Clotting MCQ Question

Thrombin is a serine protease that plays a crucial role in the coagulation cascade by converting fibrinogen, a soluble plasma protein, into fibrin, which forms the structural basis of a blood clot. Option B is incorrect because angiotensinogen is converted to angiotensin-I by renin, not thrombin. Option C is misleading, as thrombin is involved in clot formation rather than dissolution; clot dissolution is primarily facilitated by plasmin. Option D is unrelated to thrombin's biological function, as it pertains to food processing rather than hemostasis.