Problem
A student wants to design an experiment to determine how animal cells behave in various salt concentrations. The student has a 0.5% NaCl solution, a 0.9% NaCl solution and a 1.5 % NaCl solution. The student also has a model cell that has a 0.9% NaCl solution. Describe a plausible design for the experiment. Include your variables, constants and controls. Next, predict the outcome of the experiment and explain your reasoning.