Slide 1By the end of this lesson…#1#1#2#2#2#3#3#4#4#5#5#6#6#7#7#8#8#9#9#10#10#11#11Osmosis Practice ProblemsGood practice for test-taking strategy, too.By the end of this lesson…•You should be able to solve word problems that require analysis of osmosis scenarios.#1•If you soak your hands in dishwater, you may notice that your skin absorbs water and swells into wrinkles. This is because your skin cells are _______________ to the _______________ dishwater.A. hypotonic…hypertonicB. hypertonic…hypotonicC. hypotonic…hypotonicD. isotonic…hypotonicE. hypertonic…isotonic#1•If you soak your hands in dishwater, you may notice that your skin absorbs water and swells into wrinkles. This is because your skin cells are _______________ to the _______________ dishwater.A. hypotonic…hypertonicB. hypertonic…hypotonicC. hypotonic…hypotonicD. isotonic…hypotonicE. hypertonic…isotonic#2•You decide to buy a new fish for your freshwater aquarium. When you introduce the fish into its new tank, the fish swells up and dies. You later learn that it was a fish from the ocean.#2•Based on what you know of tonicity, the most likely explanation is that the unfortunate fish went from a(n) _______________ solution into a(n) _______________ solution.A. Isotonic…hypotonicB. hypertonic…isotonicC. hypotonic…hypertonicD. hypotonic…isotonicE. isotonic…hypertonic#2•Based on what you know of tonicity, the most likely explanation is that the unfortunate fish went from a(n) _______________ solution into a(n) _______________ solution.A. isotonic…hypotonicB. hypertonic…isotonicC. hypotonic…hypertonicD. hypotonic…isotonicE. isotonic…hypertonic#3•In osmosis, water always moves toward the ____ solution: that is, toward the solution with the ____ solute concentration.A. isotonic…greaterB. hypertonic…greaterC. hypertonic…lesserD. hypotonic…greaterE. hypotonic…lesser#3•In osmosis, water always moves toward the ____ solution: that is, toward the solution with the ____ solute concentration.A. isotonic…greaterB. hypertonic…greaterC. hypertonic…lesserD. hypotonic…greaterE. hypotonic…lesser#4•The concentration of solutes in a red blood cell is about 2%. Sucrose cannot pass through the membrane, but water and urea can. Osmosis would cause red blood cells to shrink the most when immersed in which of the following solutions?A. a hypertonic sucrose solutionB. a hypotonic sucrose solutionC. a hypertonic urea solutionD. a hypotonic urea solutionE. pure water#4•The concentration of solutes in a red blood cell is about 2%. Sucrose cannot pass through the membrane, but water and urea can. Osmosis would cause red blood cells to shrink the most when immersed in which of the following solutions?A. a hypertonic sucrose solutionB. a hypotonic sucrose solutionC. a hypertonic urea solutionD. a hypotonic urea solutionE. pure water#5•Sea water is dangerous to drink becauseA. one cup of sea water contains enough sodium to poison you.B. sea water is hypertonic to your body tissues and drinking it will cause you to lose water.C. sea water is isotonic to your body fluids and you will absorb too much water.D. the salt causes hypertension and you will promptly die of a stroke.E. it contains toxic levels of iodine.#5•Sea water is dangerous to drink becauseA. one cup of sea water contains enough sodium to poison you.B. sea water is hypertonic to your body tissues and drinking it will cause you to lose water.C. sea water is isotonic to your body fluids and you will absorb too much water.D. the salt causes hypertension and you will promptly die of a stroke.E. it contains toxic levels of iodine.#6•If the volume of a cell increases when it is placed in a solution, that solution is said to be __________ to the cell.A. hypertonicB. subatomicC. isotonicD. gin and tonicE. hypotonic#6•If the volume of a cell increases when it is placed in a solution, that solution is said to be __________ to the cell.A. hypertonicB. subatomicC. isotonicD. gin and tonicE. hypotonic#7•Inside one osmosis bag*, A, is a 50% glucose solution and inside bag B is a 20% glucose solution. Both bags are put into beakers containing 100% water.•*Osmosis bags are membranes that let water through but not glucose.A. Bag A will gain weight.B. Bag B will gain weight.C. Both bags will gain weight.D. Both bags will lose weight.E. Both bags will remain the same.#7•Inside one osmosis bag*, A, is a 50% glucose solution and inside bag B is a 20% glucose solution. Both bags are put into beakers containing 100% water.•*Osmosis bags are membranes that let water through but not glucose.A. Bag A will gain weight.B. Bag B will gain weight.C. Both bags will gain weight.D. Both bags will lose weight.E. Both bags will remain the same.#8•A 0.9% NaCl solution is isotonic to red blood cells. Which of these describes the results if red blood cells are placed into a 9% solution of NaCl?A. They will burst.B. They will shrink.C. Nothing will happen.D. They will expand but not burst.E. None of the above.#8•A 0.9% NaCl solution is isotonic to red blood cells. Which of these describes the results if red blood cells are placed into a 9% solution of NaCl?A. They will burst.B. They will shrink.C. Nothing will happen.D. They will expand but not burst.E. None of the above.#9•Wallway is a new general herbicide for aquatic plants. Its main ingredient is a marine salt solution. It is effective against freshwater but not saltwater plants. It works by breaking down the cell walls of the plants. The freshwater plants die because their cellsA. swell and cease to function.B. shrink.C. remain the same size but malfunction.D. are crushed by the weight of the plant.E. [not enough information to tell]#9•Wallway is a new general herbicide for aquatic plants. Its main ingredient is a marine salt solution. It is effective against freshwater but not saltwater plants. It works by breaking down the cell walls of the plants. The freshwater plants die because their cellsA. swell and cease to function.B. shrink.C. remain the same size but malfunction.D. are crushed by the weight of the plant.E. [not enough information to tell]#10•A red blood cell has a salt concentration of 0.9%. What will happen if it is placed into a 1% salt solution? The red blood cell willA. shrink if its membrane is permeable to both the salt and the water.B. shrink if its membrane is impermeable to the salt and permeable to the water.C. maintain its shape