Osmosis And Diffusion Lab Report

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Osmosis and diffusion are two methods which work towards levelling the concentration gradient in the two given surfaces – the cell and the environment. Osmosis can be defined as the passive movement of water from a higher concentration to a lower concentration through a semi permeable membrane. Tonicity is how capable is a solution to change the size of the cell that is placed in it. Based on this measure, osmosis is divided into three groups: hypotonic, isotonic and hypertonic. A red blood cell when placed in a hypotonic solution bursts due to the high concentration of water outside the cell while, the cell placed in an isotonic solution remains the same due to the equivalent concentration of water inside and outside of the cell. Lastly, the…show more content…
When there is an increased concentration of sodium ions in the blood, certain areas in the brain such as the hypothalamus and the pituitary gland gives information for release of ADH, “an anti - diuretic hormone” which in turn trigger the kidneys to “reabsorb more water to rehydrate the body” (olchs.org). This is an example of osmosis since water is the substance moving being reabsorbed into the body system to a low concentration which is the blood through various semi permeable membranes such as glomerulus and the red blood…show more content…
This is a process which is used by people suffering from malfunctioning kidneys. This dialysis uses diffusion as its method to do the chores of a normal kidney. The membranes used in the dialysis process are semi permeable which allows the passage of small molecules. The blood is taken in medium quantities and passed through this membrane which contains the dialysis solution which gets rid of particular substances such as metabolites and extra electrolytes. Hemodialysis uses osmosis to not only replace the function of kidneys but also to clear the blood of all impurities and restore

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