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Cell Transport Worksheet Complete the table by checking the correct column for each statement: Statement Isotonic Hypotonic solution solution Causes a cell to swell Doesn’t change the shape of a cell Causes osmosis Causes a cell to shrink Hypertonic solution Match the term with its correct description: a. energy f. active transport (x2) b. facilitated diffusion g. transport protein c. osmosis h. equilibrium d. passive transport (x2) i. channel protein e. diffusion _____ Transport protein that provides a tube-like opening in the plasma membrane through which particles can diffuse _____ Is used during active transport but not passive transport _____ Particle movement from an area of higher concentration to an area of lower concentration _____ A form of passive transport that uses transport proteins _____ Particle movement from an area of lower concentration to an area of higher concentration _____ The diffusion of water through a cell membrane _____ The movement of substances through the cell membrane without the use of cellular energy _____ Used to help substances enter or exit the cell membrane _____ When energy is required to move materials through a cell membrane _____ When the molecules of one substance are spread evenly throughout another substance to become balanced _____ When molecules move from areas of high concentration to areas of low concentration Osmosis Practice Activity Osmosis is the diffusion of water from an area of high concentration to an area of low concentration. Only water moves in osmosis! The diagrams below show the concentration of water and salt inside the cell and the concentration of water and salt surrounding the cell. Complete the sentences below by comparing the concentration of the water inside the cell and the concentration outside the cell. 1. 5% NaCl 95% H2O 95% NaCl 5% H2O a. Water will flow _____________________ (into the cell, out of the cell, in both directions). b. The cell will ______________________ (shrink, burst, stay the same). 2. 5% NaCl 95% H2O 5% NaCl 95% H2O a. Water will flow _____________________ (into the cell, out of the cell, in both directions). b. The cell will ______________________ (shrink, burst, stay the same). a. Water will flow _____________________ (into the cell, out of the cell, in both directions). 3. 95% NaCl 5% H2O 5% NaCl 95% H2O b. The cell will ______________________ (shrink, burst, stay the same). 4. At which solution of concentration gradient is each cell diagram? (Hypotonic, Hypertonic, Isotonic) a. _____________ b. ________________ c. ____________ General Review 1. Explain concentration gradient and diffusion with a picture or diagram. Also write a real-life example of diffusion. 2. Discuss the similarities and differences between diffusion and osmosis. 3. What would happen to a cell if placed in the following solutions (describe and illustrate). a. Isotonic solution: b. Hypotonic solution: c. Hypertonic solution: 4. Intravenous solutions must be prepared so that they are isotonic to red blood cells. A 0.9 % salt solution is isotonic to red blood cells. a. Explain what will happen to a red blood cell placed in a solution of 99.3% water and 0.7% salt. b. Explain what would happen to a red blood cell placed in a solution of 90% water and 10% salt. 5. Draw and describe a plant cell in a hypotonic solution. How will a plant cell respond differently than an animal cell? Why? 6. For the most part, plants and animal live in either a salt water environment or a fresh water environment, not both. Explain this using the principles of diffusion. 7. Explain, using pictures and terms mentioned in this sheet, what happens when salt is poured on a slug. 8. What is required for active transport to occur?