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Osmosis And Diffusion Lab Report

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In today’s lab we were able to get a hands on look at the osmosis and diffusion process as well as analysis the nutrients in food. We were separated into groups chosen by the Teachers Assistant and began our lab. There was a brief lecture with notes and what we would be looking forward to within the lab. We were given more information on what osmosis and diffusion were. Further into the discussion we learned about controls and variables. As we finally began the experiment we needed to make sure we had the required items such as the beakers, testing strips and the chemical solutions. From there we were able to go over the instructions and carefully do the assigned tasks. For our first experiment which was the Osmosis and Diffusion lab. We needed …show more content…
The second part of the lab was the Food Nutrient Analysis. In this lab we tested simple sugars, carbohydrates, proteins, and lipids. This lab was to show us how to detect the presence of nutrients that are commonly found within the food that we digest. We used standard assays to test for the nutrients. The assays were copper ion to test for simple sugars and proteins, iodine to test for starch and Sudan IV to test for lipids. In the presence of simple sugars the solution would turn brick red. In the presence of carbohydrates the solution would be a dark blue black. For proteins it would turn into a lavender color and for lipids it would change into a peach color. We made sure to be careful as to not spill any of the liquids on our clothes. We made careful observations on what the solutions looked like before and after the experiment was done. We made sure to carefully write down the observations. After we were finished with the second lab we went back to check on our first lab after it had been 30 minutes. The osmosis was clearly seen by the change in color of the membrane and the lower water level within the

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