being done to find out what happens to a carrot or a potato if you place them in two different solutions. Osmosis has a lot to do with this experiment and is the movement of water molecules from a higher concentration to a lower concentration. Osmosis only deals with water and is a type of diffusion. The difference between all three solutions is that in a hypertonic solution the cells fluid rushes out of the cell and causes it to shrivel. In a hypotonic solution water rushes into the cell and causes the
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concentration of solute between the cells and their environment (Kent 2000). Generally‚ there are three different conditions‚ when the solution is isotonic‚ hypertonic or hypotonic to the cell. In isotonic solution‚ when water potential inside and outside the cell is equal‚ both animal and plant cell behave in the same way: there is no net movement of water. In hypertonic solution‚ when water potential of the cell is higher than that of the solution‚ the water molecules will tend to move out of the cell. Hence
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Name:_______________________ Date:___________ Period:______ Page:_______ Potato Diffusion Lab Hypothesis:________________________________________________________________________ __________________________________________________________________________________ Materials Aprons/Goggles Potato Slice (2-3cm thick) Potato Borer Triple beam balance 6 x 100mL beakers plastic wrap Paper towel 50mL Distilled Water 50mL 0.2M Sucrose solution 50mL 0.4M Sucrose solution 50mL 0.6M Sucrose
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Cell Membranes and Transport Hands-On Labs‚ Inc. Version 42-0033-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing
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such a solution is hypotonic to the cells. When red blood cells are placed in pure water‚ water rapidly enters the cells by osmosis and causes the cells to burst‚ a phenomenon known as haemolysis. If the red blood cells are placed in a solution with a higher solute concentration‚ water moves out of the cell by osmosis. (8) **When the osmotic pressure of the solution outside the blood cells in higher than the osmotic pressure inside the red blood cells‚ the solution is hypertonic. When the solution
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In part B‚ what caused the mass of the dialysis bags to change? Was there more or less water in the dialysis bags at the conclusion of the experiment? Explain. 5. Was the distilled water in the beakers hypertonic or hypotonic in relation to the sucrose solutions found in the dialysis bags? 6. Suppose the dialysis bags were placed in beakers containing a 0.6 M sucrose solution as opposed to distilled water. How do you think your results would change? Sketch
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free-moving water molecules is higher in potato cells‚ the cytoplasm of the cell is hypertonic. The water molecule will flow from higher concentration to lower concentration‚ so that they get out of potato cells through osmosis. The plasma membrane of plant cell will collapse as the water inside the cell become less and less‚ that cause plasmolysis and the cell become flaccid. 2. A salt water fish may die if placed in fresh water. Why? In order to keep an isotonic condition‚ the salt water fish’s cells
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Stacy Hernandez Period 1 Mrs. Riley AP Biology Osmosis and Diffusion Lab I. Introduction: Diffusion is vital to many life functions of a cell‚ it allow the transportation of vitally important nutrients and compounds without the expenditure of excess metabolic energy. To explain diffusion‚ it is as if a bottle of perfume is opened at one end of the room‚ then in a short amount of time a person at the other end of the room can detect the scent of the perfume; this is the process of diffusion
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As the potato has a semi-permeable membrane will allow the diffusion of water molecules to go in and out of the potato‚ depending on the concentration gradient between the potato and the solutions. If the solutions have a higher concentration of carbohydrates or glucose‚ then the potato the water will pass through the membrane and into the potato and it will gain weight. However‚ if the solution has a lower concentration then the potato the water will go out of the potato through the membrane
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hypotheses were devised. 1) If potato pieces are immersed in various salt solutions‚ then the pieces with the greatest surface area to volume ratio will experience the greatest weight change‚ because more water can move by osmosis across the potato cell’s semi permeable membrane. 2) If potato pieces are immersed in various salt solutions‚ then the pieces immersed in the most concentrated solution will experience he greatest weight change‚ because more water must pass across the potato cells semi permeable
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