Giant Cells

http://www.desertwind.us/blog/2011/06/eggmosis-osmosis-with-eggs/

                Have you ever wanted to see a cell with your bare eyes. Well guess what. You can. Did you know that a egg without its shell is the biggest form of a cell. So my class did an experiment on what happens to cells in different solutions. This is called Osmosis. The materials that you need to do this experiment are vinegar, at least 4 eggs, corn syrup, salt water, and water. You will also need a container with an easy open lid, and a label maker or label and pen and a scale that measures weight in grams. First you soak all of the eggs in vinegar overnight. Then the next day you pour out all of the vinegar that was in the containers with the eggs and put the eggs back in. Then you put a label on each container the first label will say "A" the next one will say "B" and so on and so on until you have labeled all of the containers. You should have at least 4 containers labeled A-D. I am only going to go up to D. Container A is going to be your "Control" which is vinegar. Container B is going to be Corn Syrup. Container C is going to be water. Container D is going to be salt water. If you have more than 4 containers then you can put whatever you want in their. Then you leave them in there overnight. The next day you take out your scale and you measure how much they weigh in grams. Then you write them down. Notice that some eggs will be bigger than other this means that they are reacting to the solutions. Then the next day you weigh them again. then compare the weight that they were the day before to the weight they are now. ( Container A should have stayed the same weight). Notice that some of the eggs are heavier than they used to be, this means that the solution they were in was Hypotonic. If the egg seems to shrink or lose weight that means that the solution it was in was Hypertonic. If the egg stays the same weight that means that the solution that it was in was Isotonic.  You Can do it for as many days as you want. (I only did it for two).

S&EP

SP3

I planned and carried out an investigation when I observed and kept data about the eggs we did experiments on in class. I observed how the eggs looked and felt and kept data about the weights of the eggs and if their weights went down or up in grams and if they were Hypertonic, Hypotonic, or Isotonic.