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# Surface Area

Extracts from this document...

Introduction

Cell Size Surface Area Team 1 (Times) Team 2 Team 3 Team 4 Team 5 Team 6 Standard Deviation Mean 1x1 6 1500 Sec. 1635 1714 860 1352 1631 315.24 1448.67 2x2 3 3000 2802 1810 2000 2310 2534 459.38 2409.33 1x8 4.25 2580 1622 2837 2980 2561 1518 625.09 2349.67 Data Class Data Time to Diffuse Custom Shape Team Shape Mass Time Mass/Time 1 Pentagon 3.67 624.08 0.00588 2 Hexagon 2.00 966 0.00207 3 Square 6.46 1222 0.00529 4 Swastika 11.85 523 0.02266 5 Rhombus 5.30 2130 0.00249 6 14- Sided 5.20 2200 0.00194 T-Test Test P-Value Null Hypothesis 1x1 and 2x2 0.0017 Accepted 1x1and 1x8 0.0103 Accepted Class Data Time to Diffuse y = -332.72*x + 3538.74 Custom Shape y = -53.1*x + 1582.66 Based on the class data the 2x2 cell size took the longest to diffuse, then the 1x8 and last the 1x1. ...read more.

Middle

The relationship between cell volume and diffusion time is that the smaller the volume of the cell the faster the diffusion time will be. The cell with the smallest volume will have the fastest diffusion rate because the diffusion can cover that cell at a high speed because the volume is low. If the volume of the cell was large diffusion might not be able to finish and the cell will die because the overall time to diffuse the whole cell takes too long. Cells can't get really big because contact with the surroundings is essential for the cell to perform its functions. This is where diffusion and active transport occur to bring in nutrients and other important molecules as well as excretion of waste. If a cell gets to big it will die. ...read more.

Conclusion

The swastika had a unique shape than all the other teams. So its surface area to volume ratio made the swastika shape have the quickest diffusion time. Food is diffused in normal cells along with water and nutrients that need to get to the rest of the organelles. Nitrogenous wastes are also diffused in cells. To further my investigation the class should diffuses three different cell sizes on their own then get together with the class and compares the results. A whole new experiment should be down with those results to further back up my data. This would be good to have a wide range of cells to have a result. A different cell should be used with agar to compare the diffusion times based on the surface area to volume ratio. There should also be a wider range of surface area to volume to ratio cells. Kwontavious Billingsley 4A Cell Races: Size and Diffusion Lab ...read more.

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