Bioelectricity (1)

Question 1

Give the Nernst equation

Answer 1

Eion = RT/zF ln([ion]o/[ioni])
R = 8.314J/(Kmol)
F = 96500C/mol

Question 2

Give the equation for driving force

Answer 2

DF = Vm - Eion

Question 3

Why is the Goldman-Hodgkin-Katz equation better than Nernst for determining Vm?

Answer 3

Considers multiple ions

Considers each ion’s permeability