Question

An enzyme complex which is formed by a series of linked enzymatic reactions (cascade process) is called

Answer 1

Blood coagulation

Blood coagulation involves different proteins present in inactive form.

Activation of these proteins is a type of cascade reaction where activation of one protein leads to the activation of another protein.

The cascade of enzymatic reactions forms an enzyme complex, thrombokinase, which helps in activation of prothrombin to form thrombin.

Thrombin polymerises fibrinogen to form fibrin, an insoluble protein matrix involved in coagulation.

Upon the action of thrombin, fibrinogen forms an insoluble mesh-like structure called fibrin, which along with entrapped blood cells forms the clot. It helps in stopping the flow of blood.

Final answer: (C) Thrombokinase