Need your help on these biology topics please:(

[kajas2624]

Please help me on the following topics please!.Any information on these topics will be useful so please leave your comments on any of the following or related topics!

1)Difference between GTP and GTPase?
2)Where can I find a clear information about endothelial cells,geometry of a realistic endothelial cell model?
3)Some main facts about the proteins in endothelial cell(mainly considering Rac and Rho)
4)Facts on fluid flow in endothelial cell?
5)Shear stress in endothelial cells due to fluid flow(eg when blood flows)
6) Any information on Rac1 activation in endothelial cells due to fluid flow

Please I really need your help in these topics guys so please leave your comments!
And also advice on the resources that I can find a clear information on these topics.

Thanks:)

[JackBean]

anything ending with -ase is an enzyme, GTPase is enzyme hydrolyzing GTP