1. Why so small? Lab Problem: Why are cells so small? Background: Cells get nutrients in 3 ways: 1.Diffusion 2.Facilitated diffusion 3.Active transport

2. Hypothesis:

3. Procedure: 1.Use the corer to get 1 potato sample for each of the 3 sizes. The smallest corer is to push the potatoes through, if they get stuck. 2.Immerse the potatoes in the food coloring. 3.Let sit for at least 10 minutes. 4.Cut open each potato sample, and observe how much the dye has penetrated each. 5.Record your observations.

4. Data and observations: Small— Medium— Large—

5. Data analysis: 1.What do the potatoes represent? 2.How much dye entered the small potato compared to the medium and large potatoes?

6. For your conclusion, write a CER paragraph to explain how the potato relates to the cell, and explain why cells are so small using your observations from the lab.

7. Conclusion: The purpose of this lab was to The data showed… (make sure to use data from your lab) ….which (did/did not) support my hypothesis because…. An explanation of the data is… Some errors that may have occurred are…. …..which may have caused … Improvements or other experiments are…..