membrane. It allows water and oxygen to move freely across the membrane. Osmosis only has an effect when the cell is in a hypotonic or hypertonic solution. A hypotonic solution is when the salt concentration
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designed to study the effect of a concentrated solution applied to white and sweet potatoes. The solution’s impact among the potatoes were to be either hypertonic‚ hypotonic‚ or isotonic. The potatoes were first cut into fries with a fry cutter‚ and then weighed after being cut. The white and sweet potatoes’ weights ranged from .005-.015 grams. A total of 18 sugar solutions are to be made over the course of 3 trials. In each trial‚ 6 different types of solutions are to be made. (0% sugar‚ 10% sugar‚ 20%
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membrane and goes to the higher concentration of solute.1 2.2. Important factors to Osmosis and Diffusion include Temperature‚ Concentration and Surface area to volume ratio. Temperature can affect the rate in which a solute dissolves in a solution‚ higher temperature faster rate of Osmosis. This is caused by the molecules movements being faster in higher temperatures. Concentrations are important as they affect the movement of solute within a solvent‚ the lower the concentration the faster
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selectively permeable membrane on diffusion and osmosis between two solutions separated by a membrane. Hypothesis: Procedures: In lab manual Material: In lab manual Background Information: Data: Table 1 Diffusion of glucose and iodine. | Color | Glucose | Time | Dialysis Bag | Beaker | Dialysis Bag | Beaker | Start | | | | | 30 minutes | | | | | Table 2 Osmosis Investigation – Water gain by dialysis bags Solution | Dialysis BagInitial Mass (g) | Dialysis BagFinal Mass (g)
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Question: investigate the water potential of potato tissue? Introduction All cells require essential materials to ensure their survival. Chemical‚ physical‚ and biological processes are used to move these materials inside of cells. Similar processes move waste materials outside of cells. These processes can be passive‚ occurring as a result of basic physical laws and requiring no outside energy from the cell or they can be active‚ requiring energy expenditure. Since all molecules possess kinetic
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absorbed by the solutes in the solution‚ thus measuring the absorbance of a solution. The mechanism behind this theory is based on the reference on the visible light spectrum. Different compounds absorb different wavelengths of light and appear to be the colour that it’s reflected which can be observed with our naked eyes. The higher the concentration of the absorbing compounds in a solution‚ the greater the amount of light that is absorbed. The absorbance of a solution can be determined using the
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different masses of salt affect the percentage of transmitted light? Variables – Independent – • Mass of salt‚ the salt added into the distilled water in grams (0.1‚ 0.5‚ 0.75‚ 1‚ 1.5) Dependent – • Percentage of transmitted light through the solution using 5 different mass of salt and a constant availability of 2g of sugar as source of food. (there are 5 trails for each conical flask representing 5 different salt masses) Controlled – What is being Controlled? How will it be controlled? Why
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potato discs‚ of the same size and mass‚ in different concentrations of sugar solution to find out whether the mass of the discs increases or decreases depending on the concentration. I predict that when the sugar solution is 0% the mass will increase as there is less sugar in the water than in the potato. The water will then travel through a partly permeable membrane into the potato from outside. When the sugar solution is 20% the mass of the potato will decrease as there is more sugar in the water
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lab‚ the egg is the solute and it is placed in the vinegar which is the solvent. The vinegar is a solution of water (the solvent) and acetic acid (the solute). The water in the vinegar enters the egg through the membrane‚ moving from the higher water concentration in the vinegar to the lower concentration in the egg‚ which causes the egg to increase in size. A hypotonic solution is when the solution has a lower concentration of solute (higher concentration of water) than inside the cell. This is
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through the process of dead plants coming together. Such is the case with coal. Q4: in nature‚ how do sediments from one place to another? Describe how they move. In nature sediments move from one place or another through either dissolving in a solution‚ becoming part of a suspension‚ or being bedloaded. This is when the sediments are dragged‚ rolled‚ or just hop along the bottom. Side Two Purpose: to identiy rocks formed from sediments and explain how the rocks are formed. Part I
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