BI-968
Diffusion and osmosis experiments
Biology · Secondary 3 · Medium · Diffusion and osmosis experiments
A student measures the mass of four identical potato cylinders before and after placing them in sucrose solutions of different concentrations for 15 minutes. Which step best improves the reliability of the results?
- Repeat each concentration several times and calculate the average mass change
- Use a different vegetable for each concentration
- Shorten the time in solution to 5 minutes
- Use only the most concentrated sucrose solution
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