Which ion(s) would have a positive equilibrium potential? (Assume a resting membrane potential (Vm) of - 70mV.)
A) X+, whose [ECF] is 120 mM and [ICF] is 30 mM
B) A- , whose [ECF] is 100 mM and [ICF] is 100 mM
C) B- , whose [ECF] is 140 mM and [ICF] is 30 mM
D) both X+ and B- ions
E) X+, A- , and B- ions
Correct Answer:
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