[Campbell Biology P.985] Based on the provided text and Figure 42.18, which of the following... | Practice Question

Based on the provided text and Figure 42.18, which of the following statements accurately describes a step or component in the blood clotting process?

  • A: Fibrinogen is an active enzyme that converts prothrombin to thrombin.
  • B: Thrombin converts fibrinogen into fibrin, which then forms the framework of the clot.
  • C: Platelets are primarily responsible for synthesizing new collagen fibers at the injury site.
  • D: The enzymatic cascade directly converts fibrin into prothrombin.

Explanation

The text and flowchart clearly indicate that thrombin converts fibrinogen to fibrin, and fibrin then aggregates to form the framework of the clot. Other options describe incorrect conversions or roles.