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Osmosis Lab Report

1172 Words5 Pages

Living organisms are very complex as there are many different functions occurring simultaneously throughout the day. One of these functions is called Osmosis, and besides carrying nutrient rich liquid across cell membranes, an important task of Osmosis is to maintain an ideal concentration of solute within the cell. This means that it helps maintain a stable internal environment in an organism by equaling pressure and allows the absorption of nutrients. Many things alter the rate of Osmosis, like temperature. The higher the temperature, the faster the “movement of water molecules across the semipermeable membrane,” thus resulting in higher osmosis(A) . Based on this information, we were tasked to simulate this using dialysis tubing. Dialysis …show more content…

The data from the experiment are shown in the attached graph above, it shows the change in weight of each dialysis bag each of which has a different solute concentration within the time elapsed. The graph depicts the total change in the difference of weight from the time elapsed to the initial weight. For example, the 100% solute concentration bag had a 4.73g difference from the initial weight and as seen on the graph is the concentration that had the biggest change in weight. Based on the graph and the information above we concluded that the 100% concentration had the fastest …show more content…

The data helped support the statement “the higher the solute concentration of the dialysis bag is, the faster the rate of osmosis”(increase in weight) there will be. Our experiment showed that the greater the concentration gradient( the 100% solute concentration) the faster the rate of osmosis.This also showed a pattern with the less concentrated solutions as each ultimately had total changed weights in descending order. The 100% concentration bag had 4.74g total weight difference, 75% concentration bag had 4.04g total weight difference, 50% concentration bag had 3.65g difference, and the 25% concentration bag had a 2.51g difference.Osmosis is one of the most important biological functions in living things as it “is a method allowing water to spread around the cells”(A). Without osmosis, cells would die, causing major disruptions to living organisms. It allows the passage of water from a high solute concentration area through a semipermeable membrane to a low solute concentration, thus equalizing the solute

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