sweet.
Do protein based hormones trigger a faster response based on the fact that their receptors are located on the surface of the cell? Whereas lipid-soluble hormones have to travel within the cytosol and attach to the appropriate cytoplasmic receptor?
Also.. with blood typing, is Type O considered the universal donor because it possesses both antibody A and B in its plasma, but no antigens on its surface? Whereas AB is the universal recipient, because it possesses both antigens A and B on RBC's surface, with no A and B antibodies in plasma?
What are the functions of the antibodies in plasma though? Wait.. (im thinking while asking this)
Since Blood type A carries antibodies for B blood, and since A blood cannot be donated to someone with B blood... hmmm
So, if a blood type possesses antibodies for another blood type in its plasma, it cant be donated to it?
Confusing lol