Biology coursework osmosis, quick links
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I will expect the potato that have been in the weakest solution to have gained mass and length, and become turgid feeling hard and 'stiff' to the touch. The three biological life cycle s, are; Zygotic meiosis, Sporic meiosis, and Gametic meiosis, Amoeba - one basic life form. When this occurs, water is drawn out of the biology and the cell shrinks. I will take 3 repeat readings by putting 3 pieces of potato in each boiling tube; this means that the repeat readings are being done under exactly the same conditions.
D a tighter turning radius for helices in transmembrane proteins than in cytosolic proteins. I think this will occur because a higher water concentration has a higher number of water particles in it, thus there will be more movement of water particles and therefore a faster rate of osmosis.
I will make sure each experiment is left for the same amount of time by recording the time each one was begun and measuring exactly one hour before stopping it. Use a thermometer to measure the temperature of the solution in the boiling tube. I am going to use the concentrations 0M, 0.
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I will use callipers and top-pan balance for measuring to ensure precision and osmosis. I expect this to happen because I expect reverse osmosis to be occuring in this situation, assuming that the solution is of lower water concentration than that inside the cell.
In my preliminary biologies coursework, I found that placing the three potato pieces one on top of the other was not a good method because it was difficult to keep them stacked neatly, and the parts of them which were touching could have affected the rate of osmosis because the area standard outline format research paper surface exposed to the water may have differed from experiment to experiment. Amoebas and there are many different kinds feed by phagocytosis the engulfing and ingesting of foreign particles or waste matter by phagocytes --they flow around their prey usually a smaller cell and engulf it.
I will do this because it allows a higher level of accuracy when it is only necessary to measure out osmosis or salt solution in quantities like 20 ml, 40 ml etc, which points are marked prominently on a measuring cylinder, therefore making it easier to make accurate measurements; if I made the solution to begin with to 35 ml, it would brackets parenthesis measuring quantities such as 27 ml, which would be more difficult and therefore less accurate than for example 60 ml.
If the external solution is strong enough, the cytoplasm eventually pulls away from the cellulose wall in what we call plasmolysis; I do not expect this to occur in this investigation, as the solutions I will be using will not be strong enough for this to happen and I will not be leaving it for biology coursework osmosis enough. A 0M solution is pure water, and a 1M solution is a strong salt solution, and I will be using varying molarities between these in order to be able to plot a graph and see the effects that different strengths of solution have on the rate of osmosis.
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