Answer Happy

Part A What is the conductance in pS of a potassium leak channel? Nernst The ion flow rate through an individual potassium ion leak channel in a skeletal muscle cell is about 2 x 10 ions/s. This flow rate occurs because the Nernst potential for K+ (VK. :-98 mV) is not equal to the membrane potential (Vmer = -90 mV), so the ion concentrations are not in equilibrium. The current through the channel is well modeled as I = G(Vmern Nerust). In other words, the ion flow is driven by the difference between the Nernst potential and the membrane potential. Express your answer in picosiemens. Vk VΞΙΑΣφ G = pᏚ