Determining the Water Potential of Potato Cells - 2024.
More Biology essays: Practical assesment about biology: To determine the water potential of potato tuber cells. water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane. Osmosis is considered in terms of water potential and solute potential. Water potential is a measure of the kinetic energy of water molecules. Here.
A Comparison of the Drinking water Potential of Potato and Sweet Spud TubersAimThe aim of this kind of experiment is always to compare the potential of twodifferent plant tissue, potato and sweet potato tubers, by measuringthe gain or perhaps loss of water when samples of the tissue are placed in arange of concentrations of sucrose solutions.HistoryOsmosis may be the movement of water elements.
The potato tuber in the 0m solution (distilled water) reacted as I expected it to, its mass increased as the concentration of glucose inside of the potato was greater than on the outside, thus the water entered the potato to try and create equilibrium. In the experiment with 0. 5m glucose solution, the mass of the potato decreased by a substantial amount, the average percentage change was -9.
Essay DETERMINATION OF THE WATER POTENTIAL OF POTATO TUBER CELLS. Method. Five sucrose solutions with varying molarity and one control containing distilled water were prepared and poured into test tubes. The potato discs were dried, weighed and added to the test tubes. The discs were then weighed again after a period of 24 hours. The percentage change in mass was then calculated.
Water molecules move from a region of high concentration to low concentration, therefore the water moves out of the potato cells and consequently it will decrease in mass. In 0 molar or very low salt concentrations then the opposite should happen. The solution has higher water potential compared with the potato, therefore the water will move into the potato cells, increasing its mass. Water.
Sucrose solution hypotonic to the cytoplasm of potato sample, hence of high water potential and low concentration causes water molecules to diffuse into the potato tuber cell and thus, increase its mass. This happened when potato samples were placed in 0 mol dm -3 sucrose solutions. Additionally, swelling of potato tuber cells samples might be connected with more water entering them and thus.
The water potential of the potato initially will be kept the same by using the same type of potato, which has been treated in the same way. The mass of the potato is a dependent variable, and this means that it will be measured throughout the experiment. I will measure the mass in grams. The potato chip will be measured before it is put in the solution, and after.