The graph under shows the concentrations of two ions outside and inside a particular neuron. Use the data below to complete questions 2 to 5 and assume that the neuron is only permeable to Ca+2 and Cl- ions.

Ion Con. inside Conc. outside Permeability

Ca2+ 0.0 mM 120 mM 0.5

CL- 40 mM 150 mM 1

2) What is the equilibrium potential for Ca+2 in this neuron? Assume the temperature is 37 degrees Celcius, R = 8.314 J/molK, and F = 96,485 C/mol.

189 mV

95 mV

30 mV

- 94 mV

-190 mV