Question

cell membranes contain channels that allow K + ions to leak out consider channel that has diameter of nm and length of nm if channel has resistance of G Ω what is resistivity rho of solution in channel?

Answer 1

Answer:

$Resistivity (rho) = Resistance (G) * Area (\pi r^2) / Length (nm)$

Explanation:

if rho is the resistivity, then according to the proper equation re-arrangement the resistance is G. Then, Area can be calculated by radius and dividing their product by the length of channel.