Describe the sequence of events of the clotting cascade that will lead to a blood clot in a damaged blood vessel

Thromboplastin is released from damaged tissue and platelets, which activates an enzyme that catalyses the conversation of the protein prothrombin to thrombin. This occurs in the presence of Calcium and Vitamin K. Thrombin is an enzyme that then catalyses the conversion of the soluble plasma protein, fibrinogen, into the insoluble protein, fibrin. The fibrin forms a mesh that traps more platelets and red blood cells to form a clot.

LT

Related Biology A Level answers

All answers ▸

Starch is made from two alpha-glucose polymers, amylose and amylopectin. Which is quicker to break down and why?


Describe the key feature of stem cells and discuss their applications in research and medicine. Please provide examples.


What are the different stages of Mitosis?


List the structures of the nephron in kidneys and which parts of the nephron differ in permeability to water?