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Recommended: Rate affecting osmosis process
The rate of osmosis for bag 1 was .0036 g/min. The water flowed inside and outside of the bag. Bag 2 had a rate of osmosis of .0321 g/min; the water flowed inside the bag. Bag 3 had a .05 g/min rate of osmosis; the water flowed inside the bag. Bag 4 had a .0921 g/min rate of osmosis; the water flowed inside the bag. Bag 5 was the only bag that the water flowed solitary outside the bag with a -.0807 g/min rate of osmosis. Figure 1, illustrates the increase, constancy, or decrease of the bag’s mass. The general pattern shown in the data was that when the sucrose concentration increases the rate of osmosis increased as well.
help give a better idea of how the rate of osmosis is affected by the
Investigation of the Concentration and the Effect of Sucrose on Osmosis in Apple and Potato Tissues
incorrect. After I have done that I will try and find ways in which I
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.
An Investigation to Find the Effect of Sugar Concentration on Osmosis in Potato Chips Introduction: Osmosis is the passage of water molecules from an area of high concentration to an area of low concentration through a partially permeable membrane. In this case, Osmosis applied to the practical because the aim was to see if a sugared solution had an effect on osmosis in potato chips, it was intended to find out if different concentrations of sucrose solution caused a selectively permeable membrane, or a potato chip, to become larger or smaller. It was planned to use six different concentrations of sucrose solution and for each concentration; three sets of results were taken. The change of weight for each result was then found and finally, the average weight change was found. Prediction: It was predicted that the higher the sugar concentration, water would transfer from the potato into the sugared solution making the potato decrease in weight, and vice versa for the lower sugar concentrations.
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.
When I am not using them I will place them away from my experiment and
The experiment is aimed at giving a better understatement of osmosis process and the different conditions in which osmosis occurs.
When doing this experiment I was able to see the effect of different concentrations on the rate of osmosis, each was done by measuring the initial mass and length of the potato cylinder and after osmosis, the results were conducted to show that as the sucrose concentration increases the rate of osmosis also increases as I said in my hypothesis thusly making a direct decrease in mass.
At point A the graph shows that no change in mass, of the potato, would have have occurred had we used a 0.2 (m) sucrose solution. This suggests that the concentration of water inside the potato would have been equal to the solution outside the potato. At point B (plain water), there is no indication that the cell is increasing in mass. This is because the cell is fully turgid and no more water can enter.
the same way as it does potato. I would also widen the range of sugar
repeat the process 3 times in total to ensure a fair test. At the end
when to do it etc. This should lead me to good results at the end of
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.
Determining the Concentration of the Cell Sap in Potato Storage Tissue Aim: To determine the concentration of the cell sap in potato storage tissue. By using Osmosis, determine what the sugar concentration of cell sap is. Prediction I predict that the potato segment in the distilled water will definitely gain in weight because the solution outside it has a much higher concentration of water then in the cell sap meaning Osmosis will occur and the potato segment take in water. I predict that 0.2M sugar solution will also gain weight because it still has quite a high concentration of water outside the potato. The potato in the 0.4M solution will gain weight but the potato in the 0.6M and 0.8M solutions will lose weight.