Investigation of the point of incipient plasmolysis of onion cells (Allium cepa) using NaCl (Sodium Chloride) concentrations of 0. 1M, 0. 2M, 0. 3M, 0. 4M, 0. 5M, 0. 6M Design Research Question (Aim): The aim of this lab was to determine the point of incipient plasmolysis of onion (Allium cepa) cells using Sodium Chloride (NaCl) concentrations of 0. 1M, 0. 2M, 0. 3M, 0. 4M, 0. 5M, 0. 6M. Hypothesis: When the water concentration of a solution outside the cell is lower than the concentration inside the cell, water will move from the inside to the outside of the cell due to osmosis.