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Concentration of solutes affect osmosis
Effects of concentration on the rate of osmosis
Effects of concentration on the rate of osmosis
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Recommended: Concentration of solutes affect osmosis
DISCUSSION Interpretation and Analysis The data in both Table 2 and Graph 1 show that as the concentration of sodium chloride (%) is increased from 0% to 10% when there is a significant increase in the % change in mass, thus also the rate of osmosis. Between concentrations 0% and 2% there was a rapid % change in mass. At 0% NaCl the % change in mass was +1.63% indicating that the potato piece had gained water because the concentration of solute must have been higher in the potato than in the solution. The % change in mass at 2% NaCl concentration was -8.82%, the negative indicates that the potato piece had lost water as the concentration of solute was higher in the solution than the potato piece. From 2% to 4% NaCl solution the %change in mass was slightly less rapid but still had an increase from -8.82 to -14.7, respectively. The graph had a slower decreasing trend from 4% NaCl solution onwards, this can be seen from the gradual plateau of the graph. The slowest increase in %change in mass of -0.04% was between 6% to 8% valued at -16.5% and -16.9%, respectively. The % change in mass increased slightly from -16.9% to -17.5% between 8% to 10% NaCl concentration. This suggests that the rate of osmosis had begun to stabilize and may be the result of the concentrations of both the …show more content…
This occurs as in the process of osmosis, the water moves from a dilute solution to a more concentrated solution through a protein pore or semi-permeable membrane, without the expenditure
help give a better idea of how the rate of osmosis is affected by the
Considering the fact that Marc has both been sweating and drinking minimal amounts of water, Marc is now dehydrated. This means he has less than the required amount of water for his body to complete the processes necessary to maintain its health. As stated in the question, the process of sweating causes the loss of more water than solutes. This means that as the level of water decreases, the level of solute concentration will increase, creating a change in the water to solute ratio.
However, in this diagram we see that osmosis has been taking place for a short while, because water molecules have started to diffuse to the right, across the membrane, so that there are now many present on the right side of the membrane, and a few sugar molecules are starting to diffuse across the membrane in the opposite direction, to the left side of the membrane as we see it. Through moving from an area of lots of free water molecules, to an
If a plant cell is places in a hypotonic solution the cell has a lower water concentration to that of the solution. Water will move into the cell by osmosis from a high water concentration outside the cell to a lower water concentration inside the cell through a selectively permeable membrane. The cell becomes turbid
Osmosis and diffusion are two methods which work towards levelling the concentration in the two given surfaces – the cell and the environment. Purchon defines osmosis as the movement of water from a higher concentration to a lower concentration “through a semi permeable membrane”. For instance; a red blood cell when placed in a hypertonic solution undergoes crenation as water from cell moves down the concentration gradient into the environment. Osmosis is only for water molecules while the similar movements of other particles down their concentration gradient is known as diffusion. Diffusion can happen in various mediums such as liquid and air. For example, the cologne particles when released, diffuses through the air. It is necessary to understand the purpose of osmosis and diffusion to get an idea about the importance of homeostasis in our body and how the organs systems work towards
Erythrocytes, or what are commonly known as red blood cells (RBC) within our bodies are constantly being faced with a changing environment. Tonicity is referred to as the concentration of solutes, permeable and nonpermeable, as well as the concentration of water both influencing the water that will come and goe through the RBC, and the surrounding fluid of the RBC (Sherwood, 2013). Osmosis on the other hand is known as the movement of water from an area of low concentration to an area of high concentration and this will happen across a cell’s membrane until it reaches a state where it is isotonic.
The rate of osmosis for bag 1 was .0036 g/min. The water flowed inside and outside of the bag. Bag 2 had a rate of osmosis of .0321 g/min; the water flowed inside the bag. Bag 3 had a .05 g/min rate of osmosis; the water flowed inside the bag. Bag 4 had a .0921 g/min rate of osmosis; the water flowed inside the bag. Bag 5 was the only bag that the water flowed solitary outside the bag with a -.0807 g/min rate of osmosis. Figure 1, illustrates the increase, constancy, or decrease of the bag’s mass. The general pattern shown in the data was that when the sucrose concentration increases the rate of osmosis increased as well.
-The cells in the body will increase because osmosis causes molecules to move from a less concentrated solution to a more concentrated solution.
In this experiment, the effect of osmosis on the weight change of a potato was examined. The purpose of this lab was to study whether the weight or volume of the potato was effected if there was an increase or loss of water.
Every living organism’s salt content is controlled by osmosis. Through osmosis, water moves across an organism’s surface and/or membrane. Osmosis usually moves from high concentration to low concentration. In this experiment we decided to add 300mL of water in 2 jars labeled a Jar A was filled with freshwater while Jar B was created into a saltwater solution. After we added a 1 piece of each of our vegetables which were (carrot, celery and raisin). After we added the vegetables we added cling wrap to each of our jars so the water doesn't evaporate and turn into water vapor. In groups we had to figure out what happens to the vegetables before and after 24 hours in the saltwater, and the freshwater. Vegetables such as carrots
The purpose of our lab is to construct the models of cells using the dialysis tubing to stimulate the selectively permeable nature of the plasma membrane, observe the effects of osmosis on a model cell and to be able to predict the effect of solute concentration on osmosis. The independent variable in this lab is the amount of sucrose concentration. The dependent variable is the mass and the constant variable in our lab is the fluid sucrose concentration. In this lab one safety guideline to follow is be sure to always wear safety goggles, gloves, and a lab apron to protect your eyes and clothing when working with any chemicals. Another safety precaution is to dispose of any waste materials and clean up your work area as directed by the instructor. A third lab safety precaution to follow is to always wash your hands before leaving the laboratory.
By doing this we observed both diffusion and osmosis taking place. Diffusion1 is a movement of molecules or other particles from a region where they are more concentrated to a region where they are less concentrated. If the movement is not stopped by anything else, a solute will diffuse until it reaches a steady state. Osmosis1 is the diffusion of water across a selectively permeable membrane. This means that the movement occurs passively if water is moving from a higher concentration to lower concentration. We used both hypotonic and hypertonic solutions. A hypotonic1 solution has a lower concentration of solutes than the cell. A hypertonic solution has a higher concentration of solutes than the cell. Hypotonic uses osmosis to take in water and hypertonic uses osmosis to lose water. In this lab we could better understand how diffusion and osmosis are factors of regulating cell
The hypothesis tested was rejected. It stated that all the carrots would increase in weight. Not all of the carrots increased in mass. Some of them actually lost weight, in fact (cups A, B, and C). The carrots that lost weight were in a hypertonic solution (there were more molecules outside of the cells), or the carrots in the highest sugar concentration. The water moved out of the cell because of osmosis. Only water moves through the membrane, not sugar particles because they are too big (not permeable to the membrane) (Baker, et. al., 2012). The solution that had a low concentration of sugar was a hypotonic solution. The carrot gained mass because water moved in the cells to dilute the solutes (cup D). Cups E and F were isotonic solutions. There was no net movement of water because there was equal amounts on both sides of the
Osmosis is the process of moving water from a region of high concentration to a region of low concentration. The water and the fluids constantly try to move into or out of the cell through the cell permeable membrane. Therefore, Fluids and water movement among the cells and tissues is depending on the concentration of the solutes and the amount of water in that area. Our body needs a proper balance of water and solutes inside or outside of the cells to be able to maintain the body's cells normal function. When a solution is Hypertonic means that the concentration of solutes are greater outside of the cell compare to inside of the cell, in that situation water move out from the cell and cell will be shrink. Hypotonic solution in contrast, is
Osmosis is the passage of water molecules from a weaker solution to a stronger solution through a partially permeable membrane. A partially permeable membrane only allows small molecules to pass through, so the larger molecules remain in the solution they originated in. Solute molecule [IMAGE] [IMAGE] Water molecule [IMAGE] The water molecules move into the more concentrated solution. When water enters a plant cell it swells up. The water pushes against the cell wall and the cell eventually contains all that it can hold.