You are working with a neurotransmitter, that when bound to its receptor, will open Cl- channels in the cell membrane of nerve cells. The extracellular Cl- concentration is O.1 M, the intracellular Cl- is 0.01, and Ecl- is -55mV. When the neurotransmitter binds to its receptor and the Cl- channels open...
A) which direction (into or out of the cell) will Cl- flow if acted on ONLY by its concentration gradient
B) which direction (into or out of the cell) will Cl- flow if acted on ONLY by its electrical gradient
C) which direction (into or out of the cell) will Cl- flow, if acted on BOTH gradients ( which gradient is stronger and how did you determine this? How will this change the resting membrane potential?