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.
Fourthly, we let the egg sit for twenty four hours. Then we transferred the egg from corn syrup into distilled water. Then we let egg sit for twenty four more hours. After that you can do whatever you would like to with the egg because the experiment is complete. Results (Data): Day 1: Bubbles started to form around the egg The egg started to float to the top of the container The vinegar started to soak into the egg (Displace) Day 2: There was NO bubbles.
This ideally will lead to the box being able to withstand the impact that will occur when the box is dropped. The second key part to our container is the sponge/foam padding that we attached to the bottom of our cardboard box. This padding cushions the fall so that when it hits the ground, the impact is absorbed into the foam pads and not the egg. The padding will cause the box to bounce once it has hit the ground, but the materials inside the box are enough to keep the egg from breaking. Plus, the box would be better off bouncing a little and landing on its side, than falling from a great height and having nothing on the bottom to absorb the shock.
With the design of my container I think it will protect the egg from most of the impact. Although I think that with the weight of the box the impact will be harder. The weight of the container will also decrease the time. With a decrease of time it will increase the impact of the box. Even with those two factors I still believe that the egg will survive because of the way I designed it.
Our next prototype consisted of an egg with metal rings surrounded around it. The metal rings would act to decrease the impact upon the egg. This idea would also work but the egg inside the rings was not to be trusted to be sturdy and there was a change it would bounce around which in that case the egg would be severely damaged. Our last idea was to fill two cups with marshmallows and the egg inside centered between the
Size of the egg: Each egg was around the same size and weight. Had the eggs been to big or to small from each other we could not compare the results because they would be to different. The amount of liquid used: The amount o liquid needed to be controlled as different amounts of liquid would have given different results. Hypothesis: All the eggs would steadily gain weight over time, but would gain less quickly in a high sucrose solution. Background: Osmosis is a process in which molecules of a solvent (water) pass through a semipermeable membrane from a high water potential to a low water potential, and equalizing the concentration on each of the sides of the membrane.
In this experiment, you will be looking at the movement of water. Your teacher has soaked the eggs in vinegar. This dissolves the hard shell and leaves a soft outer covering that acts like the cell membrane of a cell. Materials: Egg Plastic cup Water Vinegar Corn syrup Procedure: Day 1 1. Mark the cup with a sharpie with your period number, group initials, and the first soaking solution (water, vinegar, or corn syrup).
Osmosis Lab: Conclusion Andrea Joseph To test the property of osmosis, I put an egg in a jar with liquid to see if the liquid would move in or out of the egg, and therefore change the egg’s mass. My hypothesis was that the type of liquid in an egg is put into will affect the mass of the egg. This hypothesis was further explained by my prediction, “The mass of my egg will be greater than what it originally was when placed in approximately 240 ml tap water.” Both of these were proved correct by my experiment. On the first day, my egg weighed 56.04 grams, and was placed in vinegar. After four days, the egg was visibly larger than it was originally, it felt like a heavy water balloon, and the shell had disappeared and left a gold membrane with white residue behind.
INTRODUCTION: The purpose of the Jelly-Side Down experiment was to see if jellied bread would always land jelly-side down. If jellied bread falls from a height of 30 inches and has different amounts of jelly, then the bread with the most jelly should land jelly-side down more often. If less jelly is applied, then the bread should have less of a chance to fall jelly-side down. Lastly, if you apply jelly to only half of the surface, it should shift its weight during the fall. HYPOTHESIS: I believe that no matter the amount of jelly on the bread, landing jelly-side down will not always be the case.
After filling the holes of the petri dish with the solution, the dish was covered and allowed to sit undisturbed for one hour. Part II of the experiment was performed by taking two eggs from a vinegar bath. The eggs were carefully dried with a paper towel. After drying the eggs, the eggs were measured. The initial measurements of egg #1 were 5.9cm in length and 4.8cm in width.