The Effect of Temperature on Beet Cell Membranes
In this lab, we are going to learn how the stress of temperature affects fresh beets. We have come to learn that cell membranes organize the chemical activities of cells. All cells are made of plasma membranes, often called fluid mosaics. It is sometimes described as a mosaic because it is made of protein molecules that are embedded into phospholipids. Phospholipids are the main structural support of the membrane and the proteins perform most of the functions of a membrane. Together they form boundaries or barriers between the cell itself and its surroundings, like the membrane of an egg. Plasma membranes also control what substances come in and out and also dispose of the
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I kept the pieces of beet in the paper towel while I got the other items ready. For the cold treatment I put one piece of beet in each beaker (5 and 6) and put tube 5 in the refrigerator and tube 6 in the freezer. I left them in there for 30 minutes. After 30 minutes, I covered each one with the same amount of tap water and let them soak for 20 minutes. After 20 minutes I took each beet out of the test tube, threw the beet away, but saved the colored water so I could chart later. For the room temperature and hot treatments I put each piece of beet into its marked test tube. For tube 1 (70°c), I had to simmer water to get it to the correct temperature. I put the piece of beat into the beaker of water and waited one minute, I took it out and put it in beaker one, covered it with room temperature water and waited 20 minutes. Beet 2, 3 and 4 were all conducted the same way. I put the correct temperature of water into the beaker, let the beat soak for one minute, took the beet out of the beaker and covered with tap water in the test tube for 20 minutes. After 20 minutes I discarded all the beets so I could record my findings with the colored water that was left behind.
From doing this experiment I found that the more stressful environments you subject an item to the differently they act. It is cause and reaction. In tube number one the color intensity leak was at a ten, the highest number on the chart. I found that the heat seemed to open the