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- 1. Multiple ChoicePure water has a water potential of ___.10-1100
- 2. Multiple Choice
Carrot and potato cores were placed in various sucrose solutions for 24 hours and the % change in mass was recorded and graphed. The temperature in the room was 24 C. Identify the approximate concentration of sucrose in the potato cells.
0.13 M
0.0 M
0.4 M
0.33 M
- 3. Multiple ChoiceCarrot and potato cores were placed in various sucrose solutions for 24 hours and the % change in mass was recorded and graphed. The temperature in the room was 24 degrees C. Sucrose is too large of a molecule to cross the membrane of potato and carrot cells. Which molecule caused the change in mass?watersucrosesaltglucose
- 4. Multiple ChoiceCarrot and potato cores were placed in various sucrose solutions for 24 hours and the % change in mass was recorded and graphed. The temperature in the room was 24 degrees C. Sucrose is too large of a molecule to cross the membrane of potato and carrot cells. Which of the following concentrations was NOT hypertonic to the carrot cells?0.2 M0.4 M0.6 M1.0 M
- 5. Multiple ChoiceCarrot and potato cores were placed in various sucrose solutions for 24 hours and the % change in mass was recorded and graphed. The temperature in the room was 24 degrees C. Calculate the water potential for the carrot cells if the pressure potential is 0.approximately -8.1 barsapproximately -8.1 Mapproximately 8.1 barsapproximately -3.5 bars
- 6. Multiple ChoiceA sucrose solution in a beaker has a solute potential of -4 bars. A cell with a solute potential of -2 bars is placed in the beaker. What is the pressure potential of the cell (assume it was not turgid) before it was placed in the beaker?0 bars2 bars-2 bars-4 bars
- 7. Multiple ChoiceA sucrose solution in a beaker has a solute potential of -4 bars. A cell with a solute potential of -2 bars is placed in the beaker. What is the water potential of the cell before it was placed in the beaker if ψp = 0?0 bars2 bars-2 bars-4 bars
- 8. Multiple ChoiceA sucrose solution in a beaker has a solute potential of -4 bars. A cell with a solute potential of -2 bars is placed in the beaker. What is the water potential of the solution in the beaker?0 bars4 bars-2 bars-4 bars
- 9. Multiple ChoiceA sucrose solution in a beaker has a solute potential of -4 bars. A cell with a solute potential of -2 bars is placed in the beaker. What will be the direction for the net movement of water?into the cellout of the cellthere will be no net movement
- 10. Multiple ChoiceWhat is the approximate sucrose concentration in the potato core?0.43 M0.28 M0.0 M1.0 M
- 11. Multiple ChoiceWhat keeps this plant cell from bursting?the cell wallit's vacuolethe membranethe nucleus
- 12. Multiple Choice
If a cells = 3 bars and its = -4.5 bars, what is the resulting ?
-7.5
7.5
-1.5
1.5
- 13. Multiple Choice
What is the of a 1.0M sugar solution in an open beaker at 22 C?
-24.5 bars
24.5 bars
-49 bars
2.45 bars
- 14. Multiple Choice
At 20 C, a cell containing 0.6M glucose is in equilibrium with its surrounding solution containing 0.5M glucose in an open container. What is the cell's ?
2.4
0.1
-12.2
-14.6
- 15. Multiple Choice
At 22 C, zucchini cores are measured and determined to have a sucrose concentration of 0.36M. What is the of these cells and in which direction will the net flow of water be if they are placed in a 0.36M solution of NaCl at the same temperature?
0.64 bars; net flow of water into of the cell
-0.36 bars; net flow of water into the cell
8.17 bars; net flow of water out of the cell
-8.83 bars; net flow of water out of the cell
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