Osmosis is the net movement of water from an area of high concentration to an area of low concentration. The process was first studied in 1877 by a German physiologist, Wilhelm Pfeffer. The general term osmose, now osmosis, was introduced in 1854 by a British chemist, Thomas Graham. (Britannica, n.d). This lab shows the rate of osmosis between three different concentrated cells and their outer environment. The dialysis tube mimicked the purpose of a cell membrane and the water in the beaker acted
Discussion: Osmosis is a process in which water diffuses through a selectively permeable membrane from a low solute concentration to a high solute concentration. This lab shows the rate of osmosis between three different solute concentrations placed in water. The purpose of the dialysis tube placed in the graduated cylinder was to imitate a cell placed in its exterior environment. In this experiment, it was hypothesized that if the concentration of a solute is correlated to the rate of osmosis, then increasing
Abstract This experiment was done primarily to observe the process of osmosis. Osmosis is diffusion involving water molecules. Osmosis takes place when the water molecules move from an area of high water concentration to an area of low water concentration through a selectively permeable membrane. Five eggs were placed in five different solutions. The solutions used included distilled water and four different concentration levels of a glucose solution. Results showed that, over time, the egg placed
Abstract The whole purpose of this lab experiment was to measure how the rate of osmosis can be effected by different kind of concentration gradients. It is determined that the rate of diffusion is effected by how strong the concentration gradient is. This was determined this by taking five dialysis bags and filling each with different concentration of fructose solution. Each bag was then placed into a beaker. Four of the beakers were filled with just tap while but the last one consumed 40% sucrose
The net movement of water through a semi permeable membrane and its dependency upon the concentration of solutes in a solution. Abstract: Osmosis is a process by which water molecules travel between a semi permeable membrane in order to equalize solute concentration on both sides of the membrane. This experiment was performed in order to show how the concentration and tonicity of the solute/ solution combination affects the net water movement between the cell and its environment. The results obtained
Osmosis Lab Report BIO 2101-02 Jasmine Monger (+Tayshondalyn Huntley, Brandi Burke, Jasmine Vann) Dr. Carly Kemmis December 5, 2014 Introduction Osmosis is the movement of water from a low concentration to a high concentration across a different permeable membrane. When talking about osmosis three terms are usually connected to it or heard during the same time. Those three terms are hypotonic, hypertonic, and isotonic. These three terms can be categorized as the tonicity, amount of solute
Background: In this lab experiment, students were able to work with the concept concerning the osmosis ideology. This was observed through two different processes where plant and animal cells were utilized. In using these cells, the students were able to identify and experience how Osmosis works with osmotic concentration, osmotic potential, water potential, and osmotic pressure. All of these concepts and the properties of the cells let us make observations that would help piece the entirety of
rate of osmosis. The results, evidently supported the hypothesis by the changes in the potato cylinder mass due to the concentration of solutes. The increase in mass is due to the lower concentration salt present in the potato cylinder. The theory supporting this observation suggests that the potato cylinder was submerged in a hypotonic solution (lower solute concentration). As this sample was in distilled water, the solution can be said to be hypotonic relative to the potato cylinder. Osmosis occurred
Dennis Baca Osmosis Lab: Conclusion Biology: 1 Period: 5 11/13/15 In conclusion, I learned that the cell membrane is able to select what can come into the cell, and just how selective it is. I also learned more about how diffusion and osmosis is able to work in conjunction with passive transport. In conducting this lab I used dialysis tubing, as mentioned in the introduction it is a synthetic membrane and acts as a cell membrane, one example is filtering wastes from a person’s blood with a kidney
This lab examined the effects of diffusion, specifically osmosis, in dialysis tubing model cells of different solute concentrations. In turn, this lab provides a model for what happens in living cells when osmosis occurs. For the lab three beakers were filled three quarters full with solution. One beaker contained water and the other two contained a water and sugar syrup solution. Three dialysis tubes were then filled with solution and placed into the beakers to create "model cells." The beaker