21. G-proteins are associated with which receptor superfamily?
(A) oligomeric ligand-gated ion channels
(B) 7-transmembrane segment (7-TMS) receptors
(C) cell adhesion protein receptors
(D) single-transmembrane segment catalytic receptors
(E) none of the above

答案：登入後查看
統計： A(0), B(0), C(0), D(1), E(0) #3981705