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Diffusion Lab Report

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During the science lab, the concept investigated was diffusion. The purpose of the lab was to see whether or not cell size affected the rate of diffusion. Therefore, the hypothesis made in the lab was that cell size does affect the rate of diffusion. Since the hypothesis was that cell size affects the rate of diffusion; it was accepted based on the analytical results tested in the lab. One significant finding of the experiment based on the data about the three cubes was the inverse relationship which was as cell size increases, the surface area to volume ratio decreases. To find the ratios, the calculation of the surface area of each cube (length x width= cm^2) and the volume of each cube (length x width x height= cm^3) was necessary. As a result, the ratio of surface area to …show more content…

Another significant finding of the experiment based on the data was that the smallest cube was completely diffused, while the biggest cube was not. In order to find the area diffused, certain/precise calculations were required. The first calculation needed to be was to find the volume of the pink region of the cube and then the percentages of the cube that is pink. To find the volume of the pink region (the area that got diffused), the subtraction of the volume of the cube and the volume of the yellow region was necessary. Therefore, the volume of the pink region for the 1 cm cube was 1 cm^3, the volume of the pink region for the 2 cm cube was 7 cm^3, and the volume of the pink region for the 4 cm cube was 37cm^3. In order to find the percentages of the area diffused in the cells/cubes, the calculation of the volume of the pink region over the volume of the cube times 100 was needed. Based on the results, the 1 cm cube was 100% diffused, the 2 cm cube was 87.5% diffused, and the 4 cm cube was 57.8% diffused. Overall, cell size did affect the diffusion rate. Also, if oxygen was

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