Osmosis in Animal Cell

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OSMOSIS IN AN ANIMAL CELL Objectives: 1) Observe osmosis across the membrane of a chicken egg 2) Measure the amount of water that moves across the egg membrane. 3) Observe and recognize the three osmosis solutions (hypertonic, hypotonic, isotonic). Hypothesis: In the osmosis experiment I believe the vinegar will have a hypotonic solution on the egg. The syrup will have a hypertonic solution on the egg, and the water will have an isotonic solution on the egg. Materials: 1) Beakers 2) Water 3) Plastic wrap 4) Rubber band 5) Light corn syrup 6) Vinegar 7) 2 raw egg (large) 8) 2 graduated cylinder (100ml, 50ml) 9) Marker for labeling cup 10) Tri Beam scale Procedure: 1) Measure 130ml of vinegar into the beaker. 2) Gently place the egg into the vinegar. Make sure the egg is completely covered by the vinegar. 3) Weigh all of the items o the scale 4) Cover the beaker with plastic and secure it with a rubber band. 5) Label the beaker with your name and period. 6) Observe what happens immediately and record. Predict what will happen to the egg. 7) Leave the egg in the vinegar for at least 24 hours. Day Two: 1) Gently remove the egg from the vinegar. 2) Using the graduated cylinder measure the amount of vinegar left in the beaker and record it. 3) Record any changes you observe in the egg. 4) After measuring the vinegar pour it down the sink. Rinse and dry out beaker. 5) Measure 150ml of syrup into the beaker. Make sure egg is covered. Predict what will happen to the egg. 6) Gently place the egg in syrup and weigh it on the scale. Cover with plastic wrap and secure with rubber band. 7) Leave for 24 hours. Day Three: 1) Gently remove egg from syrup. Leave syrup in beaker. 2) Measure the amount of syrup left in beaker and record. 3) Observe what has happened to the egg and record in your

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