NDA2025General AbilityGeneral ScienceActual
Clotting of blood involves which one among the following clotting proteins?
Options
- APathogen
- BFibrinogen
- CMacrophage
- DPhagocytes
Correct answer
B. Fibrinogen
Step-by-step solution
Blood clotting or coagulation is a process that prevents excessive bleeding when a blood vessel is injured. Platelets and proteins in the plasma work together to stop the bleeding by forming a clot over the injury. Fibrinogen is a soluble plasma glycoprotein synthesized by the liver. During the blood coagulation cascade, the enzyme thrombin converts fibrinogen into insoluble fibrin threads, which form a mesh that traps red blood cells and platelets to form a stable blood clot. Pathogens are disease-causing microorg