Tuesday, October 18, 2011

Osmosis Variables

If you order your essay from our custom writing service you will receive a perfectly written assignment on Osmosis Variables. What we need from you is to provide us with your detailed paper instructions for our experienced writers to follow all of your specific writing requirements. Specify your order details, state the exact number of pages required and our custom writing professionals will deliver the best quality Osmosis Variables paper right on time.

Out staff of freelance writers includes over 120 experts proficient in Osmosis Variables, therefore you can rest assured that your assignment will be handled by only top rated specialists. Order your Osmosis Variables paper at affordable prices with http://livepaperhelp.com!

Factors affecting the investigation

Osmosis occurs when there is a difference in potentials, each side of a selectively permeable membrane. The free water molecules move from a high potential to a low potential across a selectively permeable membrane. In this case, the tiny holes in the membrane of the potato cells will allow the water molecules to pass through in and out of the solution and the potato, depending on the concentration gradient of the two substances. So in this case, when the water potential is lower in the potato cells, the water will diffuse across from the solution, and into the cells of the potato, so therefore the potato will gain mass. If there is very little difference in the two water concentrations, there shouldn¡¦t be such a big change in mass. Furthermore, if there is a higher potential of water in the potato, the water will diffuse back out of the potato and enter back into the solution.

The factors involved that would affect the experiment are

„h Time

Buy custom Osmosis Variables term paper

essay writing service

The time span in which the potatoes are exposed to the different solutions will have a large impact on the experiment. For instance if we put the potatoes in the range of concentrations for an hour, more osmosis would take place than if we put them in the same concentrations for half an hour.

„h Test samples

The test samples (potatoes) will need to be the same size (surface area) for all of the tests that I choose to do, and they must be from the same potato. This is because when there is a larger surface area, more osmosis will take place, because there are more cells for the water to diffuse through across the selectively permeable membrane (Surface area is proportional to osmosis). The test samples need to be from the same potato because different potatoes may have cells with different water potentials and therefore giving us a false result

„h Temperature

For the duration of this experiment, the temperature will have to be kept constant because osmosis may occur at a higher or lower rate at different temperatures. This is because heated water molecules have more energy than non-heated water molecules. We will therefore need to make sure that all the samples are kept at the same temperature when they are being tested.

„h Concentrations

Concentrations of sucrose will have a big affect on the outcome of the experiment. The higher the concentration of the solution, the less heavy the potato becomes. This is the crucial variable that is going to be tested. I will explain this in more detail later on.

„h Volumes

The volume of the solution that the potato chips are kept in must be the same. The chip must be totally covered in the solution, and the amount of solution will be kept the same because all the chips are the same size.

Please note that this sample paper on Osmosis Variables is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Osmosis Variables, we are here to assist you. Your persuasive essay on Osmosis Variables will be written from scratch, so you do not have to worry about its originality.

Order your authentic assignment from http://livepaperhelp.com and you will be amazed at how easy it is to complete a quality custom paper within the shortest time possible!