Answer: A hypothesis can become <u>a scientific theory if it is supported by repeated experimentation. </u>
The influence of the fast-acting inhibitor of t-PA on clot lysability by endogenous or exogenous t-PA was investigated by immersing clots prepared from normal or inhibitor-rich plasma (endogenous inhibitor) in normal or inhibitor-rich plasma (exogenous inhibitor). Exogenous t-PA inhibitor efficiently neutralizes clot lysis by both exogenous and endogenous t-PA. Endogenous t-PA inhibitor, however, efficiently neuralizes endogenous t-PA but has little influence on clot lysis by exogenous t-PA. These findings indicate that t-PA inhibitor is not concentrated into a clot and that t-PA inhibitor in plasma efficiently neutralizes t-PA incorporated in a clot.
α2-Antiplasmin depleted plasma clots were more susceptible to lysis by both endogenous and exogenous t-PA than normal clots. Removal of α2-antiplasmin from the surrounding plasma resulted in even shorter lysis times.
It is concluded that not only the concentrations of t-PA and of t-PA inhibitor play a role in the regulation of thrombolysis, but also their distribution between the clot and the surrounding plasma. In addition, α2-antiplasmin counteracts clot lysis significantly.
Answer:
B)Cyclins regulate the timing of cell cycle
The least likely be cause of natural slection is moire genetic various because they are are different from each other and if things happen to the other it won't probably happen to the other one
The Answer is B. There would be more iguanas with webbed feet and flat tails.
In order to survive the ever-changing environment, Iguanas also have to adapt. Adaptation includes the evolution of how it looks like. Having webbed feet and a hot, flat tail makes it easier for them to swim from island to island to find food.