In this lab we asked the question, "Can macromolecules be identified in an egg cell?" We found that proteins, monosaccharides, polysaccharides, and lipids were all found in the egg whites, while the other parts of the egg only had a few. Our hypothesis for the egg white was that if the cell walls include monosacchardies and polysaccharides, then these will also be found when testing the egg whites. There were about 5 of each macromolecule in the egg whites, and the colors observed were purple (monosaccharides), yellow-orange (polysaccharides), purple (proteins), and white-orange (lipids). Our hypothesis for the egg yolk was that if the egg yolk is a giant cell, then all of these macromolecules will be found in it. Every macromolecule was found in the egg yolk except for lipids. The quantitative and qualitative amount of macromolecules found were dark purple, 8 (monosaccharides), golden, 7 (polysaccharides), brown/purple, 8 (proteins). Our hypothesis for the egg membrane was that if the cell membrane is made up of lipids and proteins, then when testing the egg membrane, lipids and proteins will be found. Proteins and lipids were present in the egg membrane, with qualitative and quantitative observations of purple, 3 (proteins), pink/red, 2 (lipids). This data supports our claims that
Our data contradicts the expected results because while we expected every macromolecule to be present in the egg yolk, it was missing one of them. There weren't any lipids present at all in the egg yolk and because of this, our hypothesis of "If the egg yolk is a giant cell, then all of these macromolecules will be found in it," was false. One error we came across is that for the polysaccharides test, the person testing accidentally put too much iodine in the egg white. Although we only had one error, another possible one could've been cross-contamination of the chemicals. Due to these errors, in future experiments, I would recommend carefully watching how much you put in each test tube and cleaning each dropper everytime you use it.
This lab could have been improved by maybe keeping better track of our observations and communicating with each other more for more accurate results. This lab was important in understanding biological concepts because the egg is a very good representation of a cell, since it literally is just one giant cell. By interacting with an actual cell, we were able to grasp a better understanding.
Our data contradicts the expected results because while we expected every macromolecule to be present in the egg yolk, it was missing one of them. There weren't any lipids present at all in the egg yolk and because of this, our hypothesis of "If the egg yolk is a giant cell, then all of these macromolecules will be found in it," was false. One error we came across is that for the polysaccharides test, the person testing accidentally put too much iodine in the egg white. Although we only had one error, another possible one could've been cross-contamination of the chemicals. Due to these errors, in future experiments, I would recommend carefully watching how much you put in each test tube and cleaning each dropper everytime you use it.
This lab could have been improved by maybe keeping better track of our observations and communicating with each other more for more accurate results. This lab was important in understanding biological concepts because the egg is a very good representation of a cell, since it literally is just one giant cell. By interacting with an actual cell, we were able to grasp a better understanding.
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