1. How do polypeptides have the following types of effects:autocrine, paracrine, and endocrine
2. If you experimentally increase the concentration of Na+outside a cell while maintaing other ion concentrations as theywere, what would happen to the cell's membrane potential? Can youplease exaplin why?
a - membrane potential would increase b - membrane potentialwould decrease c - membrane potential would be unaffected d -depends on thermodynamy potential
