Water potential questions - practice 1. A cell is in equilibrium with an outside solution where Ψ outside = -1.0 MPa. Water is added to the outside solution such that Ψ outside = -0.2 MPa and the cell volume increases 1.5 times. What Pcell is required to stop the movement of water into the cell? 2. What is Ψ of a cell if P=0.2 and Π = 0.6? 3. If we put that cell into a 0.2M sucrose solution, then find P, Π and Ψ of the cell at equilibrium.