Osmosis lab - Russell Koh 12.6 T14! ! Aim! In this investigation you will be calculating the concentration of the cytoplasm in potato cells.! ! Variables:! Independent variable! Concentration of sugar solution(mol)! ! Dependent variable! The percentage change in mass of the potato after the experiment is over. (%grams)! ! Controlled variables! Surface area to volume ratio (SA:V ratio)! Temperature of the solution! Time allowed for osmosis to occur! ! Hypothesis! I predict that there will be a negative
Effect of Diffusion and Osmosis on White Potato vs. Sweet Potato Introduction: The purpose of this experiment was to develop an understanding of water—solute balance. In this experiment, sweet potatoes and white potatoes were used as model systems. (Bio 261 Lab Manual) Diffusion is the movement of particles from an area of a higher concentration to one of a lower concentration. In this experiment this would be the movement of particles from the potato to the sucrose solution
The Effects of Concentration on Osmosis in Potatoes The aim of this experiment is to find out which molarity of salt solution creates an isotonic environment to prevent osmosis in potatoes. The water potential of a cell is determined by the solute potential and the pressure potential. Solute potential represents the concentration of a solution and given that adding solutes lowers water potential, this makes it less than zero, (negative). The pressure potential refers to the pressure being applied
graph (Fig. 1), the change in tissue mass percentage for the damaged tissue of the potato tuber increases as the sucrose solution concentration increases, there were more positives at concentrations 0.15 mol/L (7.3%), 0.20 Mol/L (6.8%), 0.25 Mol/L (3.02%) ,0.3 Mol/L (2.65%), 0.35 Mol/L (2.84%) and 0.50 Mol/L (3.69%) respectively. For the young tissue, the % change in tissue mass decreases as sucrose concentration increased. At 0.25 Mol/L (-0.6%), 0.3 Mol/L (-1.15%), 0.35 Mol/L (4.6%) and 0.5 Mol/L