I have been asked to investigate the effects of osmosis on potato cell sap. I will test potato cylinders in different strengths of sucrose solution and record any results in a table. I will then analyse my findings and work out the isotonic point of the potato cell sap. Prediction I have looked at my scientific knowledge from the background theory I carried out and I will base my prediction upon this information. In this experiment‚ I expect the different concentrations to show fairly noticeable
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water in and out of a cell by osmosis Prediction I predict that by increasing the water potential around the outside of the potato cell‚ (i.e. so that the water potential is greater outside the cell compared to the inside of the cell e.g. 0m sucrose) that the net movement of water into the cell will increase. This is due to the water potential being greater outside the cell compared to the inside of the cell‚ therefore water will diffuse into the cell by a process of osmosis. The opposite however will
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air. However there is a specialized type of diffusion called Osmosis. This is when water molecules moves from a region of high concentration of water to a region of low concentration of water thru a semi-permeable membrane. Osmosis will only occur thru a semi-permeable membrane (that is a membrane which selectively allows passage of certain types of molecules through it while restricting the movement of others) Examples of Osmosis includes a) The absorption of water by plants roots to maintain
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93-1.04 grams from the solutions containing AgNO3 (Table 1). Graph one depicts the correlation of percent change in weight for each sucrose concentration with AgNO3 added. The initial length of the potato cylinders were 2cm as depicted in table two. Graph two depicts the correlation of percent change in length in different sucrose concentrations. The initial weights for the solutions lacking AgNO3 ranged from 1.0-1.7grams (Table 3). Graph three displays the correlation for the percent change in weight
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From the graph I can clearly see that Distilled water has a much larger concentration of water then the cell sap in the potato tissue. I can make this conclusion because the results show a big increase in weight of the potato piece. Meaning that water has moved from outside the potato into the potato due to Osmosis‚ proving that the distilled water had a higher concentration of water‚ as water moves from a high concentration to a low concentration. I can also see that the glucose
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Eating: - Clear out the kitchen cabinets‚ throw out all the fattening junky foods. - Down size‚ smaller portions "Slim-Size" - Bag it ( put chips / cookies in a bag) - Baby step to fewer calories‚ what does 100 Cal equal to ? 14 potatoe / for chips 1 (8.2 ounce ) of pop 1 and 1/2 tablespoons of ranch salad dressing 2 and 1/2 Oreo sandwich cookies - Don’t cut out any major food groups‚ have a good balance of healthy proteins fat‚ & carbs Breakfast Low Fat Greek yogurt
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and Isotonic Solutions Affect the Water Movement of a Cell? Purpose: The purpose of this activity is to teach students about osmosis and the effects of hypotonic‚ hypertonic‚ and isotonic solutions on animal cells. This lab is designed for high school biology students but may be adapted for middle school students. Objectives: The students will be able to describe osmosis and differentiate between the effects of hypotonic‚ hypertonic‚ and isotonic solutions on animal cells and determine the equilibrium
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will move into the cell. However‚ if the concentration of inside the cell is lower than the outside‚ water will not move into the cell. This process is called osmosis. Research question; This investigation will determine how different concentrated sugar water will affect to the mass change of the potato cells using the concept of osmosis. Hypothesis; I predict that the potato slice in beaker C will gain the most increased mass than beaker B and C. The reason is that since beaker C has a highest
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Aim To investigate the effects of increasing salinity on potato cell mass. Background Information This experiment is based upon osmosis. Osmosis can be defined as the net movement of water molecules from a region with high concentration to a region with low concentration. 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. This process will take place until
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potato is very high because this experiment exactly showed what happened when there is Osmosis present and the following information will prove it. Our results greatly showed that there has been osmosis present. Osmosis is the diffusion of water through a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration. And the results we got shows that osmosis occurred in this experiment. In 0.0 mols of sucrose the mass of potato has increased so
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