Computer Simulation of Cell Transport Mechanisms and Permeability

1900 WordsOct 5, 20138 Pages
Computer Simulation of Cell Transport Mechanisms and Permeability: Passive Processes and Active Processes Introduction In this lab we will establish a difference between the two types of cell transport mechanisms and their permeability. The first type of cell transport is passive processes which are driven by concentration or pressure differences in the interior and exterior of the cell. The second type is active processes which use energy known as ATP to power the transport. There are two main types of passive processes called diffusion and filtration. This can be split into different types such as simple diffisuion, facilitated diffusion, osmosis and filtration. The objective of these experiments is to provide…show more content…
In the chart labeled simple diffusion it shows the size of the membrane, starting concentration in both the left and right beaker, and the average rate of diffusion. In the chart labeled facilitated diffusion it shows the starting concentration of the left and right beaker, the number of carrier proteins and the rate of diffusion. In the chart labeled osmosis it shows the size of the membrane, starting concentration of both left and right beakers, the hydrostatic pressure, and rate of diffusion. In the chart labeled filtration it shows the size of the membrane, pressure, the rate of filtration, if residue was present in the membrane, the starting concentration and the filter concentration. In the chart labeled active transport it shows the amount of ATP, the starting concentration of both the left and right beaker, amount of sodium potassium pumps, number of carrier proteins and the rate of diffusion. Discussion According to the results found in the simple diffusion experiment we were able to support the hypothesis. Depending on size, some particles were able to diffuse while others were too large to pass through. For NaCl it was able to pass through three out of four membranes, once able to pass through it had a constant average of diffusion at .0150. Urea was able to pass through two out of four membranes, and also once through it had an average rate of .0094. Albumin was not able to pass

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