03-25-2015, 05:09 AM
NBME 1 Q.
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) protein alter which of the following ion transport mechanisms?
A) cAMP-stimulated Cl– secretion
B) cAMP-stimulated Na+ secretion
C) cAMP-stimulated Na+ uptake
D) Ca2+-activated Cl– secretion
E) Ca2+-activated Cl– uptake
Mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) protein alter which of the following ion transport mechanisms?
A) cAMP-stimulated Cl– secretion
B) cAMP-stimulated Na+ secretion
C) cAMP-stimulated Na+ uptake
D) Ca2+-activated Cl– secretion
E) Ca2+-activated Cl– uptake