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Effect of osmosis on different salt solution potato cells
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Effect of osmosis on different salt solution potato cells
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Potato cells, Diffusion, osmosis, and Tonicity by Michaela Cupp
Science Experiment Topic: which solution will help absorb the red dye into the potato cells, pure water or 50% salt water.
Related research topics/terms: Diffusion, Osmosis, Tonicity are things I found during my experiment.
An explanation of the links between the topics: The dye was diffusing through the potato cells, this is the link between diffusion. Osmosis is linked to the experiment because in order for the diffusion to work the water would have to first need to go through the holes in the cells also known as osmosis. And finally Tonicity was a major part because the solution that the potato was in (pure water) was hypotonic which means that the cells had swollen which made it harder for the dye to move through the potato, and the hypertonic solution (50%salt water) did the complete opposite because instead of making the cells swell it made them shrink which made it easier for the dye to pass through the potato.
A preview of the 3 body paragraphs: first paragraph= Diffusion second paragraph= Osmosis third par...
This process can also be defined as osmosis, which is the diffusion of water molecules across a membrane. (Unknown, 2) When we first got the egg it would be an isotonic solution meaning that it had equal tension (Unknown,1) which would mean that the same amount was inside the cell as outside of it. The purpose of the experiment was to learn about diffusion, concentration gradient, passive transport, equilibrium, osmosis, tonicity, hypertonic solutions, hypotonic solutions, isotonic solutions, and osmoregulation. If I put the egg in corn syrup, then the egg will deform because it has been placed in a hypertonic solution.
The Effect of Solute Concentration on the Rate of Osmosis Aim: To test and observe how the concentration gradient between a potato and water & sugar solution will affect the rate of osmosis. Introduction: Osmosis is defined as, diffusion, or net movement, of free water molecules from high to low concentration through a semi-permeable membrane. When a substance, such as sugar (which we will be using in the experiment we are about to analyse), dissolves in water, it attracts free water molecules to itself, and in doing so, stops them from moving freely. The effect of this, is that the concentration of (free) water molecules in that environment goes down. There are less free water molecules, and therefore less water molecules to pass across a semi-permeable membrane, through which sugar molecules and other molecules attached to them are too big to diffuse across with ease.
Osmosis Experiment Planning Aim: The main subject that I will be planning to investigate is the effects of a concentrated sucrose solution on potato cells on the basis of the Osmosis theory. Background knowledge: The plant cell and its structure To understand osmosis in detail I will need to explain the plant cell (which is the cell included in the osmosis experiment) and its cell membrane. Below I have a diagram of a plant cell: [IMAGE] Osmosis is about the movement of particles from a higher concentrated solution to a lower concentrated solution to create an ethical balance via a partially or semi permeable cell membrane. Osmosis in simple terms is the exchange of particles between the cytoplasm inside the cell and the solution outside the cell. What makes this exhange is the partially permable cell membrane.
The experiment is aimed at giving a better understatement of osmosis process and the different conditions in which osmosis occurs.
Investigate the Osmosis of Potato Cells in Various Salt Solutions. Introduction I have been asked to investigate the effect of changing the concentration of a solution on the movement of water into and out of potato cells. I will be able to change the input of my experiment. The input variable is the concentration of the solution.
1. and 2. until you have 21 pieces of potato (3 per beaker) of equal
Osmosis in Carrots Background Osmosis is the diffusion of water from a dilute solution to a more concentrated solution through a partially permeable membrane, which allows the pass of water molecules but not solute molecules. [IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE]If a cell is placed in a less concentrated solution water enters because the less concentrated solution will have a high concentration of water than the inside of the cell. Once the cell takes in maximum water the cell becomes turgid. If the cell was to be placed in a high concentrated solution, water would leave the cell because the cell would contain a low concentrated solution. So in the low concentrated solution there will be a high concentration of water and in the high concentrated solution there will be a low concentration of water.
Finding the Relationship Between Turgidity of Potato Cells and the Concentration of the Surrounding Medium
However, the solution could be more water than salt so the water from the solution could be more concentrated than the water inside the potato cells. If so then In theory the water in the solution should diffuse into the potato. cells and increase in mass. Apparatus: Potato to perform the experiment on. Thin metal tube to cut potato chops with.
Semi permeable membrane [IMAGE]Water molecules Salt molecules [IMAGE] Osmosis is the movement of water molecules across a semi permeable membrane from a region of high water concentration to a region of low water concentration. My prediction in this investigation is that the solution with the least salt will make the potato weigh more, thus the potato in the distilled water solution will weigh the heaviest, because there will be a higher concentration of water molecules in the distilled water than inside the potato cylinder. Therefore, water will move in from high concentration to low concentration this will increase the mass. I based my prediction on the process of osmosis, which is a special type of diffusion. It occurs across a permeable membrane, which allows some particles to diffuse through it and not others.
For the lab experiment for Membrane Damage, we tested the extract pigment and diluted it. When the pH solutions are added, this will cause it to be in a range of absorbance. We used materials as follows. Obtaining a beet we proceeded to cut small individual cubes. We then rinse each cube to remove any damaged pigments with deionized water. Using a blender, we blend the beets with 15 mL of pH 7 DI water. After blending we used cheesecloth to separate the liquid from the solids for easier centrifuge process. Then we put the liquid beet into a centrifuge tube and centrifuge it for 5 minutes at 2500 rpm. We then remove the supernatant into a beaker, and discarded the sediment. Using a 1:4 ratio mixture of the supernatant and deionized water, we made a stock solution. We then tested the stock solution’s absorbance with a spectrophotometer, and place 1 mL of the solution into separate test tubes. Next we added an additional 4 mL of pH solutions in the 2-11 range into each test tube. After mixing, we tested the absorbance for each solution using a spectrophotometer.
Osmosis in Potato Tubes Osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a high concentration to a low concentration. Diagram: [IMAGE] [IMAGE] Aim: To see the effects of different concentration of sugar solution on Osmosis in potato tubes. Key factor: In the investigation we change the sugar solution from: 0%-10%-20%-30%-40%-50% this is the independent variable; the dependant variable is the change in mass. Prediction: I predict that all the potato tubes in pure water or low concentration sugar solution will swell because water enters their cells by osmosis.
This experiment determined what temperature and what type of chemical had the most effect on the membrane of a beet. It was hypothesized that if the beet was put in a higher temperature, then it would have harm the membrane therefore releasing the most pigment into the water, rather than a cooler temperature. This was predicted because when a substance or particle is placed in a cold temperature, the process slows down and when it out in a warmer temperature the process speeds up. For the different chemicals, it was hypothesized that when the beet was put in acetone, it would release the most pigments because it was the most acidic chemical; if it's strong enough to take off a chemical like nail polish then it would break the membrane of the beet. The hand soap was thought to have the least effect on the membrane of the beet because its acidity was a little higher
When you place a potato chip in a salt or sugar solution, then if the
Prediction I think that when the potato is placed in distilled water the potato mass will increase. This is because water, has, if pure, a weaker concentration than the potato, and the water molecules move in through a partially permeable membrane by osmosis. If the potato is in a high concentration salt solution, the potato mass will decrease because the potato is less concentrated than the salt solution, and the water will move through the partially permeable membrane into the stronger solution. However, if the potato mass stays the same after the experiment, this means that the water/salt solution and the potato must be of equal concentration.