Osmosis
Osmosis: How fast can you move?
The Rate at which Osmosis Occurs when Exposed to Various Toxicities
Within the human body many things are occurring at all times. Without these small, seemingly insignificant processes all human life would cease to exist. One of the aforementioned activities is Osmosis, or the movement of water across a selectively permeable membrane eventually establishing equilibrium on both sides of the concentration gradient (Freeman 90). During this specific experiment involving Osmosis, the primary focus was to decipher the relative rate of Osmosis under various conditions. It was hypothesized that as the percentage, or concentration, of sucrose increased the rate at which Osmosis occurred would increase as well.
Results
Figure 1 The Change in Mass (g) of Osmosis Bags Over Time When Subjected to Various Conditions
Bag 1 represents the control. The bag was filled with 5.5g of deionized water and then placed into 35 mL of deionized water resulting in relatively no change in mass due to equilibrium already being established. Bag 2 was filled with 5.6g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 20% resulting in an average rate of change of .0493 g/min. Bag 3 was filled with 5.7g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 40% resulting in an average rate of change of .0671 g/min. Bag 4 was filled with 5.5g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 60% resulting in an average rate of change of .0879 g/min. Bag 5 was filled with 5.0g of sucrose with a concentration of 60% then placed into a 35 mL solution of deionized water resulting in an average rate of change of -.0814 g/min.
Discussion
The results of this experiment are in agreement with the previously mentioned hypothesis. When the bags containing deionized water were placed into solutions containing sucrose there was a significant average rate of
The Rate at which Osmosis Occurs when Exposed to Various Toxicities
Within the human body many things are occurring at all times. Without these small, seemingly insignificant processes all human life would cease to exist. One of the aforementioned activities is Osmosis, or the movement of water across a selectively permeable membrane eventually establishing equilibrium on both sides of the concentration gradient (Freeman 90). During this specific experiment involving Osmosis, the primary focus was to decipher the relative rate of Osmosis under various conditions. It was hypothesized that as the percentage, or concentration, of sucrose increased the rate at which Osmosis occurred would increase as well.
Results
Figure 1 The Change in Mass (g) of Osmosis Bags Over Time When Subjected to Various Conditions
Bag 1 represents the control. The bag was filled with 5.5g of deionized water and then placed into 35 mL of deionized water resulting in relatively no change in mass due to equilibrium already being established. Bag 2 was filled with 5.6g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 20% resulting in an average rate of change of .0493 g/min. Bag 3 was filled with 5.7g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 40% resulting in an average rate of change of .0671 g/min. Bag 4 was filled with 5.5g of deionized water then placed into a 35 mL solution of sucrose with a concentration of 60% resulting in an average rate of change of .0879 g/min. Bag 5 was filled with 5.0g of sucrose with a concentration of 60% then placed into a 35 mL solution of deionized water resulting in an average rate of change of -.0814 g/min.
Discussion
The results of this experiment are in agreement with the previously mentioned hypothesis. When the bags containing deionized water were placed into solutions containing sucrose there was a significant average rate of
Citations: Freeman, Scott. Biological Science, 4th Edition. Pearson Education Inc., 2011. Print. Lillie, R. S. 1909. The General Biological Significance of Changes in the Surface Layer or Plasma-Membrane of Living Cells. Biological Bulletin. 17(3): 188-208