Diffusion Essay -- essays research papers

Lab Report 1 DiffusionIntroductionThe gentle body undergoes a variety of processes end-to-end each and e really day in order to sustain life. Tasks such(prenominal)(prenominal) as walking, breathing, and digesting what has been eaten are sometimes considered mundane, even taken for granted. One such process that is needful to maintain life is diffusion. Diffusion is a bring out factor in moving ions, fuels, and other molecules into and out of the blood. It is one of the just about important components in supplying oxygen to the alveoli and removing carbon dioxide. Without diffusion, substances would find it very difficult to pass through membranes and could cause detrimental effects to the human body. The paradox scientists have drawn is related to glucose molecules and the directions in which the molecules realize to move. No single molecule should diffuse in any particular fashion, provided should diffuse every which way. This report looks at four airs attempting to solve the problem presented, how do the molecules know which way to diffuse? In order to understand the obtained research, it is necessary to present and identify the key components of Ficks Law of Diffusion F = -D * A*dC/dx F = the flow of material across a real or imaginary skim offD = the diffusivity of the diffusing molecules(the unbosom in which the molecule diffuses in the surrounding medium)A= area of the planeC= concentration of the molecules X= distancedC/dx = the concentration sideThere will be four simulations conducted in order to contri preciselye Ficks Law and determine if molecules do in fact know which way to diffuse. The first simulation will look at a single molecule in an open area, the second looks at the front of several molecules, the third looks at molecules diffusing in a ... ...te the counterchange in concentration with respect to the change in distance. In ruse 4 we have two chambers connected with a underground. corresponding simulation 2, the concentr ation of molecules across the whole system at sense of correspondence is equally distributed. If the dimensions of the organ pipe were small and narrow, only a small region of the molecules will be contained in the pipe at equilibrium. The flow of molecules to the remune regulate chamber would decrease. The calculation of the rate of approach to equilibrium in simulation 2 cannot be applied here because we have a pipe of a different volume that alters the flow.As the figure above depicts, the rate of approach to equilibrium increase as the diameter of the pipe increases. until now the rate of approach will not increase infinitely but will plateau as some point because the diameter of the pipe can only be so large to connect the boxes. Accordingly, increase the length of the pipe will slower the rate of approach to equilibrium because the molecules will have to travel a greater distance. ReferencesDiffusion- Simulation of randomly moving particles WebCT. Drexel University. Apri l 2005