Osmosis in Quail’s Eggs

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Aim : To investigate the average different in mass of five quail’s eggs in five different concentration of sodium chloride solution. Research question : How do the five different concentration of sodium chloride solution affect the average different in mass of five quail’s eggs ? Introduction : In this experiment, we are investigating the effect of osmosis when quail’s egg are immersed in different concentration of sodium chloride solution. “When a cell membrane is said to be selectively permeable, it means that the cell membrane controls what substances pass in and out through the membrane. This characteristic of cell membranes plays a great role in passive transport. Passive transport is the movement of substances across the cell membrane without any input of energy by the cell. The energy for passive transport comes entirely from kinetic energy that the molecules have. The simplest type of passive transport is diffusion, which is the movement of molecules from an area of high concentration to an area of lower concentration. Diffusion moves down the concentration gradient, which is the difference in the concentration of molecules across a space”. “Osmosis will occur when there is an uneven distribution of solute in a solvent. The higher the solute in solvent, then there will be a higher rate of osmosis through the diffusion gradient forming a hypertonic or hypotonic solution. Solvent with equal or no solute forms an isotonic solution”. Hypothesis : When the quails’ eggs are immersed into 0% (distilled water), 5%, and 15% concentration of sodium chloride solution, the final mass of the quails’ eggs will increase. But when the quails’ eggs are immersed into 30% and 45% concentration of sodium chloride solution, the final mass of the quails eggs will decrease. http://www.biologyjunction.com/osmosis_lab_report_sample_4_prea.htm ,visited on 30/8/2012
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