please explain thanks

Why would cells use receptors, which bind to the same
cytokines with different affinities – yet bind with different
affinities?

]True or False?

All cytokine receptors consist of 2 transmembrane
proteins

Describe 2 proteins (SHP and SOCS) and explain how they
effectively reduce the affect/amount of phosphotyrosines in the
Jak-stat pathway (also true in other “inhibitory
pathways”).