If a plant cell has a lower water potential than its surrounding environment

# If a plant cell has a lower water potential than its

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2.) If a plant cell has a lower water potential than its surrounding environment and if the pressureis equal to zero, is the cell hypertonic (in terms of the solute concentration) or hypotonic to its environment? Will the cell gain water or lose water? Explain response.
3.) In figure 1.5 the beaker is open to the atmosphere. What is the pressure potential (Ψs) of the system? 4.) In figure 1.5 where is the greatest water potential? (circle one)Beaker Dialysis Bag 5.) Water will diffuse_________ (circle one) the bag. Why? 6.) Zucchini cores are placed in sucrose solutions at 27ºC resulted in the following percent changes after 24 hours: % Change in Mass 20% 10% -3% -17% -25% -30% Sucrose Molarity Distilled Water 0.2 M 0.4 M 0.6 M 0.8 M 1.0 M
7.) a) Graph 1.3 0.0 M 0.2 M 0.4 M 0.6 M 0.8 M 1.0 M -40 -30 -20 -10 0 10 20 30 Sucrose Molarity VS Change in Percentage Mass Column1 Linear (Column1) Sucrose Molarity Change in Percent Mass b) What is the molar concentration of solutes within the zucchini cell? About 4.5 M 8.) Refer to the procedure for calculating water potential from the experimental data. a) Calculate solute potential of the sucrose solution in which the mass of the zucchini cores does not change.
Ψ s = -(1)(1.0 M)(.0831 literbar/moleºK)(295ºK) = -24.51 bars b) Calculate the water potential of the solutes within the zucchini cores. Ψ s =Ψ → Ψ= -24.51 bars 9) What effect does adding solute have on the solute potential component of that solution? Why? 10.) Consider what would happen to a red blood cell placed in distilled water: a) Which would have the higher concentration of water molecules? (circle one)Distilled water RBC b) Which would have the highest water potential? (circle one)Distilled water RBC c) What would happen to the red blood cells? Why? 1.) Sketch and describe the appearance of the onion cells when distilled water added. The onion cells seen too look like a brick pattern and are close together.

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