In this reaction, all reactants and products are invisible. The heat being evolved is the clue that tells you a reaction is taking place. This is a good example of an exothermic reaction, a reaction in which heat is given off. A lot of reactions are exothermic.
Prothrombinase will cleave prothrombin to make thrombin and thrombin is the enzyme that cuts fibrinogen to make fibrin for clot formation [Blood Clotting: The Basics]. The platelet prothrombinase activity is the same as the activity on TP-bearing cells: itâs formed from Xa and membrane-bound Va.
-The RNA primers in prokaryotes are actually much longer than those in eukaryotes. -There are some additional proteins with little understood function that are present during eukaryotic replication. -Prokaryotes initiate replication through the binding of the DnaA protein to specific sequences at the origin. This then triggers the melting of a downstream AT rich region through ATPase activity.