annotated-LAB%2004%20JB%20cell%20transport.xlsx

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Feb 20, 2024

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Observations for Each Team 1 2 3 4 5 6 Average Rate of Diffusion Diffusion Rates for Dyes at Room Temperature Dye Selection Potassium permanganate 16 16.00 22.00 20 16 18 Congo red 12 11.00 13.00 13 8 11.4 1 2 3 4 5 6 Diffusion Rates for Dyes at Colder Temperature Dye Selection Potassium permanganate 13 16.00 18.00 14 10 14.2 Congo red 11 10 14 10 8 10.6 Answer these questions: What research questions are being asked in these experiments? Does molecular size effect the rate of diffusion and does temperature effect the rate of diffusion. Hypothesize about the effect of molecular size on diffusion rates of potassium permanganate and Congo red. potassium permanganate will have higher diffusion rates compared to congo red because it is smaller in molecular size. If your hypothesis is correct, then what prediction would you make concerning the outcome of the experiment? ("If...then...") if potassium permangante is smaller in molecular size then It will diffuse faster. If congo red is bigger in molecular size then it will diffuse slower. Hypothesize about the effect of temperature on diffusion rates of potassium permanganate and Congo red. as temperture increases potassium permangante and congo red will have faster diffusion rates compared to when in a low temperature enviornment. If your hypothesis is correct, then what prediction would you make concerning the outcome of the experiment? ("If...then...") if potassium permangante and congo red are placed in a room temperature enviornment they will diffuse faster than in a low temperature enviornment. Which of the solutes diffused faster at room temperature? potassium permangante Which of the solutes diffused faster at colder temperature? potassium permangante Compare the diffusion rate of a single dye at room temperature versus cold temperature. Was the diffusion rate the same? No they werent the same. The dyes diffused faster at room temperature.

Final Weight Initial Weight Difference Percent Difference 0 M sucrose 1.2 1.1 0.10 9.09 0.1 M sucrose 1.1 0.8 0.30 37.50 0.2 M sucrose 2.2 0.9 1.30 144.44 0.3 M sucrose 1 0.8 0.20 25.00 0.4 M sucrose 0.9 0.9 0.00 0.00 0.5 M sucrose 1.2 1.2 0.00 0.00 0.6 M sucrose 1.1 1 0.10 10.00 Answer these questions: What research question is being asked in these experiments? what is the osmolarity of potato tissue. Hypothesize about the osmolarity of potato tissue in relation to the sucrose solutions you have been given. the potato tissue will increase in mass due to sucrose solutions. If your hypothesis about the osmolarity of potato tissue is correct, then what results might you predict from your experiments? (Use "if/then" statements for your predictions.) if the potato tissue is placed in a sucrose solution ranging from 0.1 to 0.6 then they will be hypertonic. At what sucrose molarity does the trend line cross the zero percent difference point on the graph? 0.4 sucrose and 0.5 sucrose How does this information relate to the osmolarity of the potato tissue? potato tissue tends to swell when placed in hypotonic soultions because they will try to reach osmotic equilibrium, causing there mass to increase. When the potato cube is surrounded by a hypotonic solution, what change in mass occurs in the potato cells? the mass of the potato will increase. Figure 1: Osmolarity of a potato 0 M sucrose 0.1 M sucrose 0.2 M sucrose 0.3 M sucrose 0.4 M sucrose 0.5 M sucrose 0.6 M sucrose 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 sucorose concentration percent difference Percent Difference Linear(Percent Difference)

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