Diffusion And Diffusion Of Diffusion

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Introduction: All cells contain membranes that are selectively permeable, allowing certain molecules to pass into the membrane as well as block the transport of large molecules from entering. The membrane serves as a barrier to separate the cell and its ‘environment. Without the cell membrane, the substances necessary to the life of the cell would diffuse to the cell’s surroundings, causing toxic materials to enter into the cell. The diffusion of the solutes is limited by the semipermeable membrane. Diffusion is the movement of ions or molecules from an area of higher concentration to an area of lower concentration. Diffusion proceeds until the two concentrations are equal. For example, if a lump of sugar is dropped into a beaker of…show more content…
If blood cells are placed in contact with a hypotonic solution, the water will flow into the cell, increasing hydrostatic pressure or turgor pressure. The turgor pressure results in the hemolysis of red blood cells. In an animal cell, the cell will burst due to the lack of having a cell wall. In a plant cell, the cell will remain in normal condition due to the cell wall protecting the shape of the cell. A hypertonic solution is when there is a higher concentration of solute in the environment. If blood cells are placed in contact with a hypertonic solution, the water will flow out of the cell, which results into dehydration. Eventually, the red blood cells will shrivel and become crenate. Plasmolysis in plant cells will occur if they are placed in a hypertonic solution. Plasmolysis is when the cell membrane pulls away from the cell wall. An isotonic solution is when there is an equal concentration of solute. Thus there is no net movement of water. Hypothesis: If a potato core is placed in a hypertonic solution, then the potato core will decrease in size whereas the potato core will increase in size when placed in a hypotonic solution. Materials and Methods Salt concentrations of 0%, 0.9%, 5%, 10%, and 15% were prepared before the experiment. In the experiment, the independent variables is the salt concentration and the dependent variable is the weight of the potatoes. These different solutions are used to indicate
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