Potato osmosis coursework experiment

However, if we refer to the graph, we can see the minimum and maximum spread foreach data-point is generally close-set while the R2 value, which calculates the spread of the data-points from the line of best fit, are both relatively high — both around 0.

GCSE Science Biology (9-1) Required practical 3: Effects of osmosis on plant tissue

This demonstrable trendindicates a limiting of the amount of error, and thus fairly reliable results despite possible errors. Ultimately, potential improvements will stem from attempting to reduce the amount oferror in this investigation, particularly involving controlling the external environment and themiscalculations. To control the external affecting factors, the solution containing the potato stripscan be kept overnight instead in a controlled environment with consistent temperatures andhumidity.

Limiting the human error would be difficult and time-consuming as this would involve.

Potato OsmosisBiology SL - AThhighly-precise instruments or even more focus dedication from the experimenter during preparation. Finally, nothing can be done to uniform the response of the materials used, thus the completion ofeven more trials limits the potential error and allows the formation of generalizations.


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Despite theimprovements proposed, those relating to limiting human error and completing more trials mayprove to be futile as they are not only time-consuming, but the demonstrable trends resulting fromthis experiment indicate that no further improvements are necessary to reach the desiredconclusion. Having established that there is no real need to pursue drastic improvements for the initialexperiment, we can now proceed to discuss possible extensions to the investigation.

While wealready know the results of osmosis on a potato, we may now wish to better understand it. The mapping of this progresswould involve the periodic removal of the samples in order to measure its mass and length, afterwhich it can be compiled into a graph to chart the transformation under osmosis. Alternatively, wecould compare the progress of a potato to another type of vegetable or fruit in order to ascertainwater content of each.

Lastly, the submerged potato strips may be subjected to different kinds ofenvironment, particularly, varying humidity and temperature, without the protection of a foil cap.

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This would reveal how much of an impact environmental factors would have on the osmotic processand how would the effects manifest. In relation to the question of the sailor, this could represent thelife-span one would expect when trapped in certain climates. Quick Upload. Featured Examples. Creation Tutorial.

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Diffusion of Starch and Potato Osmosis

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Osmosis In A Potato Chip Coursework

Hypertonic solutions, as mentioned Potato OsmosisBiology SL - AThbefore, are described as those with lower osmotic pressure, indicating that the net movement ofwater moves into the solution. Limiting the human error would be difficult and time-consuming as this would involve Potato OsmosisBiology SL - AThhighly-precise instruments or even more focus dedication from the experimenter during preparation. Worried about plagiarism?


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  • Read this. Help Login Sign Up. Before planning the experiment, I will research osmosis, so that I can make predictions.

    Osmosis In A Potato Chip Coursework

    This will help me to discover how to make this investigation fair and safe. Planning ahead will help me find out the order in which to carry out the experiment. This should lead me to good results at the end of the experiment. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. When a potato is placed in water, the cells will expand by gaining weight depending on the concentration levels of the solution. When the concentration of the water is lower, more water molecules are allowed to pass through the potato cell.