12 Jun Which solutions, if any, produced a positive slope
Question
Can Anyone help? MY lab kit doesn’t have the dialysis tubing!
Sucrose solution concentration (M)
Rate of pressure change (kPa/min)
1.0
0.9
0.8
0.7
ANALYSIS (70 points)
Answer the questions below thoroughly. Feel free to include graphs from your data collection.
1) Which solutions, if any, produced a positive slope? Was water moving in or out of the cell (dialysis tubing) under these circumstances? Explain. (15 points)
2) Which solutions, if any, produced a negative slope? Was water moving in or out of the cell (dialysis tubing) under these circumstances? Explain. (15 points)
3) Does sucrose move in our out of the cell? Explain. (5 points)
4) Examine the graph of the rate of pressure change vs the sucrose concentration. Describe any pattern in the data. (10 points)
5) Use the graph to estimate the concentration of sucrose that would yield no change in pressure. Why is this biologically significant? (10 points)
6) Explain the strengths and weakness of this dialysis model with respect to an animal and plant cell. (5 points)
7) What are some potential sources of error for this experiment and how would they change the data? (5 points)
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