Egg Macromolecules Lab Conclusion

The question for this egg macromolecules lab is "Can macromolecules be identified in an egg cell?" Macromolecules can be identified in egg cells. Polysaccharides can be found in the egg membrane. For egg white a tiny bit of protein can be found. Monosacccharides can be found in egg yolks. For polysaccharides we did a test using iodine. The color should change from brown to black if a polysaccharide was present. In the egg membrane it turned dark brown and and its quantitative amount was 7. For monosaccharides we used benedicts solution which would have turned green or orange if there was a monosaccharide present. It was present in the egg yolk with a quantitative amount of 6. Lastly, in egg white, proteins were found. Although there was an error in protein because we didn't mix properly, there was a slight sign of protein. We used sodium hydroxide and copper sulfate to test for proteins. It should have turned from blue to purple. One big error we made was the testing for proteins. Almost none of them were positive. This was because we didn't mix the sodium hydroxide and copper sulfate enough. Another possible error we made was measuring. We might not have measured properly which would be another reason why it didn't test positive for some of the other macromolecules. To improve this experiment, it would be better to mix the sodium hydroxide and copper sulfate a bit better. Another thing would be to measure more accurately. The purpose of this lab was to find which macromolecules go in which part of the cell. This relates to us learning about macromolecules and cells in class. This can be applied for future studies on biology. We now know what macromolecules go in what part of a cell.