Essay on Diffusion

Cells and molecules in the environment are constantly moving and changing, for cells to function properly there is a need for equilibrium to be met. The size of the cell and the solution outside of the cell affects the rate of diffusion and osmosis in the cell. Cells are constantly trying to reach an equilibrium with the molecules and substances around it, which is why there are such terms as: hypertonic, hypotonic and isotonic. The procedures allowed testing of whether or not surface area or volume increased diffusion and how different substance control diffusion. Cells are constantly moving to reach equilibrium through diffusion and osmosis.

Without diffusion our bodies would not be able to take place in everyday actives, or even live. This is because if there is no particles moving from on place to other intrusions would not go to our brains, glucose wouldn’t be able to get from the blood to cells or oxygen moving from the air in the blood and carbon dioxide moving from out of the blood into the air in the lungs. Osmosis plays another extremely important role in the human body because if Osmosis does not take place in the body the movement of water will not occur not keeping a well water balance in the body, either causing dehydration or drinking to much water.

Hypothesis: I expect to find that when the surface area to volume of a cell reaches a certain level, diffusion alone won't be able to supply

diffusion is one of the passive transport processes. it is used in oxygen entering a cell and carbon dioxide leaving a cell. diffusion is the movement of particles such as atoms or molecules from a high concentration place in an area of a low concentration. this shows that they diffuse down the concentration gradient. the concentration gradient is a gradual change in the concentration of solutes in a solution as a function of distance through a solution. in biology a gradient results from an unequal distribution of particles across the cell membrane. When this happens solutes move along the concentration gradient until the concentration of the

Diffusion, the spontaneous movement of molecule from an area of higher concentration to an area of lower concentration, and

Repeatability: In real life, its difficult repeat the exact circumstances again, so you only get one chance to collect the results and you can’t test different ideas under the exact same circumstances. So how do you know which idea is really the best. With simulation software, you can test the same system again and again with different inputs.

Gradients are what cause diffusion. Without them, molecules could not move from high to low concentrations, and therefore no diffusion could occur.

This assignment is written in fulfillment of the MKT/421 class at the University of Phoenix. The assignment calls for covering each of the three major phases in the simulation and to describe:

The following hypothesis was made in regard to effect of the concentration gradient on the rate of diffusion: The higher the concentration gradient, the faster the rate of diffusion.

The kinetic energy causes the particles to vibrate and move randomly – moving around the area in which they are held. The random movement causes the particles to distribute randomly around the area. The higher concentrated solution has more particles that can move across the membrane compared to the lower, producing a net movement down the concentration gradient.

Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. The rate at which molecules diffuse can be determined by the relationship of molecular weight and that rate of diffusion through a membrane. Hypothesis of this experiment is that the fluid with higher molecular weight will diffuse at a slower rate and distance.

The issues inherent in the simulation are not textbook problems or questions in which answers are cut and dried and determined quickly.

The important part of the simulation assignment is what you have learned from it. As such

The process of diffusion occurs in and out of a cell when molecules travel from areas of higher

Diffusion is the passage of solute molecules from an area of high concentration to an area of low concentration (Campbell & Reece, 2005). An example is ammonia diffusing throughout a room. A solute is one of two components in a chemical solution. The solute is the substance dissolved in the solution. The solvent, the other component, is any liquid in which the solute can be dissolved (Anderson, 2002). Diffusion requires little or no energy because molecules are always randomly moving; this is due to their kinetic energy. Diffusion occurs only when there is an imbalance in the areas of