When the potato chips were removed from the test tubes and dried, I may have dried some potatoes more thoroughly than others and so some would have more excess water would add to the mass. Using the results from t I could also weigh each chip on a more accurate scale, e. When potato chips is put in higher concentrations of salt solution, osmosis will take place and the potato chips will generally become more flabby, soft and flaccid.
The first graph showed as the concentration increases the volume of the potato cylinders decreases, which clearly supports my prediction.
Repeat this procedure seventeen more times to have eighteen potato tissues. The cutting of the potatoes was the most difficult part of the experiment as although I was recording my results by mass, it could well have affected the surface area and so the overall rate of osmosis.
I will measure the size and cut it too 4cm. I know a potato cell will be or turgid when there is more water as vacuole and cell membrane can expend as it is confiding by cell wall so it exert pressure on it thus makes it more strong and turgid.
When the experiment are done, I will place the potato chips on paper towel to absorb excess salt solution and then weight it. However with all this said I think that the experiment was truly successful and I was very pleased with the completed results. Osmosis — Potato chips in sugar solution Essays-Biology Coursework: In this experiment there are two variables things that change to effect the resultswhich are; the mass change and the length change of the potato chip.
The potato chips were cut to size, then added to a water based sugar solution, where the variable was the amount of sugar added.
When there is high water potential in the salt solution outside than the vacuole inside the potato solution that the water molecules from the sugar solution will diffuse into the potato, and make it more turgid as there is more pressure being exerted on the cell membrane and cell wall as the vacuole will be bigger with more water molecules.
I will be measuring and controlling many different variables, these include; - The dependent Variable - Weight of potato chip Independent Variable After having drawn by graph, I can use it to analyse my results collected from the investigation and conclude an evaluation.
The partially permeable membrane in this instance is the cell membrane round each cell. Gcse Biology Coursework Osmosis Potato — — Bienchoisir Gcse Biology Coursework Osmosis Potato — — Bienchoisir, conseils travaux, questions travaux, projets travaux Biology coursework osmosis in a potato — The Student Room I was wondering if anyone could help me out with my coursework.
When the potato chips were removed from the test tubes and dried they may well have dried some potatoes more thoroughly than others and so some would have more excess water, which would add to the mass.
Osmosis is defined as the net movement of water or any other solutions molecules from a region in which they are highly concentrated to a region in which they are less concentrated.
The method I used for my investigation was better than the method for my preliminary test.
Strategy To create a fair test, certain aspects of the experiment will have to be kept the same whilst one key variable is changed. I will control the temperature of the atmosphere in which I conduct my investigation by carrying it out in the same location each time.
I did this by first slicing the potato with a chip slicer, which left the chips the same thickness and diameter, but all of different lengths, so a sharper knife was used to slice the ends off at the same points, leaving all the chips the same length.
After this, the chips were weighed to see if there was a major difference could be seen regarding the mass of the chip, and if a difference was seen, further modifications would be made to the chip.
Thus, the cell wall and cell membrane will collapse or shrink as there is no pressure being exerted on the membrane or the walls or there is less pressure. First we look at the definition of osmosis and I take you through the key ideas. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules such as water through but does not allow bigger molecules to pass through.
However if the salt solution is higher that the potato chip then the potato chip will be lighter, as the potato cell will have loss mass trough losing water though osmosis.
Using this background information, I can make firm prediction using the osmosis theory primarily. I then gathered six Pyrex beakers and filled each container with ml of distilled water then added the varying amounts of sugar to them.
I will use the same size borer and pencil. I already know that osmosis is a process when a substance usually solution like salt or sugar dissolved in water, the solute attract some water molecules, and they cannot move around thus decreasing the concentration of water molecules.
Osmosis is defined as the net mo I will then leave them in the test-tube for twenty minutes, take each out simultaneously and then record the difference in length for each chip. This means that the water diffuses out of the vacuole into the salt solution and the vacuole gets smaller.
Then I will again collect this data on to the table I have planned. From a preliminary experiment that I did, the results showed me that there was a large mass change in the chips and the length hardly changed at all.
The other two would be very hard to investigate and measure, so concentration will be investigated. My graph shows that as the concentration of salt increases, the mass of the potato decreases. I will put different test tubes containing the salt solution and the potato chip into beaker with water.Essay on Osmosis of Potato Chips - Osmosis of Potato Chips Introduction For this coursework, I am planning to conduct a series of experiments which will hopefully show me how much percentage change in mass will happen in potato chips when osmosis is present.
All quantities will be made the same and accurately measured to ensure a fair test. I will accurately cut three pieces of potato chip (40mm / 4cm), each one the same length. Of Osmosis On Potato Chips Osmosis is a special kind of diffusion involving the movement of water through a semi permeable membrane, separating solutions of different concentrations.
The water passes from a region of high concentration to a region of low concentration until the two concentrations are equal in water. Biology Coursework: Osmosis – Potato chips in sugar solution Essays-Biology Coursework: Osmosis – Potato chips in sugar solution BBC Bitesize – GCSE Biology (Single Science) – Cells and Biology (Single Science) Rachel carried out an experiment to investigate osmosis in potatoes.
choose your GCSE subjects and see content that x27;s tailored for you. Biology Coursework: The effects of Osmosis on a potato chip in Sugar Solution.
Before planning the experiment, I will research osmosis, so that I can make predictions. 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.
Biology GCSE Coursework: Osmosis in Potato Chips Skill Area P: Planning Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given fmgm2018.comesis: Osmosis is defined as the net movement of water or any other solutions molecules .Download