You have identified a constitutively open monovalent cation channel and wish to determine its selectivity properties. a bi-ionic experiment is performed under conditions where equal molar concentrations of na+ and k+ are placed in the extracellular and intracellular solutions respectively, and the reversal potential is found to be 0 mv. a. what would you conclude about the selectivity of this channel? b. what prediction would you make regarding the effect of this channel on the resting membrane potential of the cell if the initial membrane potential is -60 mv and this cation channel is activated? explain.

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.