GCSE Biology: Osmosis in a Potato
Aim
To investigate the effect of placing a piece of potato in a given strength of sugar solution.
Prediction
I predict that, as the solution becomes more concentrated the more the cell will shrink, as the water, of higher concentration inside the potato cells, flows down a concentration gradient into the solution, which has a lower concentration of water molecules. If we say that the percentage change when the potato is placed in the 1M solution is x%. I predict that when the solution is 0.5M the percentage change will be 0.5x%, and when the solution is 0.25M strength I hypothesise the change will be 0.25x%.
Variables Description: Dependant Variables
The dependent
variable is plotted on the y-axis. In this experiment this is the change of mass of the potato when it is placed in different strengths of sugar solution.
Variables Description: Independent
Variables
The independent
variable is plotted on the x axis and is what you choose to......
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Approximate Word Count: 941
Approximate Pages: 4 (260 words per double-spaced page) |