Potato Osmosis Lab

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Introduction Purpose The purpose of this lab is to study soil PH, soil salt concentration, osmosis and light. To identity potato weight change in sodium chloride. To determine the growth of plants scientist, farmer and business owners often work to determine the optimal conditions for their plants, which involves a variety of test and a large amount of trial and error over many years. I made a predication that the growing condition for red potato in this case is hypotonic. When the potato was placed in the 0.0m NaCl solution water diffused into the potato making it swell. The optimal NaCl condition…show more content…
T the end of the experiment there were changes in masses of each of the potato. The initial weight for the first potato was 6.50g and after it was placed in the solution for thirty minutes the mass of the potato increased to 6.67g which tells us that water was diffused into the potato. The initial mass of the second potato was 6.28g after it was placed in 0.2M Nacl solution for thirty minutes, the mass of the potato decreases to 6.15g, that shows that is hypertonic because water moved from the potato into the solution. The initial mass of the third potato was 7.0g after it was placed in 0.4M Nacl solution for thirty minutes the mass of the potato decreases to 6.48g water was diffused from the potato into the solution. The initial mass of the last potato was7.04g after it was placed in 0.6M Nacl solution for thirty minutes the mass of the potato decreases to 6.29g showing that water was moved out of the potato into the solution. In this lab we talked about the pH and fizzing of catalase activity. Chemical reaction is sped up by biological catalase known as enzymes. In cold temperature enzymes activities slows down. Enzymes denature in high temperature. When this happens, it shape changes which makes the enzymes perform different function. Denature is anything that alters the shape of an enzyme. Enzymes have an active site where chemical reaction takes place and a substrate site which is unique to all enzymes. Since potato contains

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