Egg Macromolecule Lab

In this lab we asked the question, Can macromolecules be identified in an egg cell? We found that that egg membrane tested positive for proteins, because the membrane in the solution became purple. Also, proteins can be found in the cell membrane because it allows the transportation of molecules that go in and out of the cells. This data supports our claim because it shows why the membrane was tested positive when added with the solution sodium hydroxide.

We found out that egg white tested positive for proteins when we added sodium hydroxide to it. Proteins are found throughout the cell, and there are enzymes and proteins in the cytoplasm. This data supports our claim, because it shows why there are proteins in egg whites.

Finally, we had nothing that tested positive for egg yolks.

Our data was unexpected, because nothing tested positive for egg yolk and lipids didn't test positive for egg membranes, which could have been due to the amount of drops added to the egg parts and the time the solutions were added and how long the solution was in with the parts. These errors could have affected the results, because it could've changed why we didn't get results that we should've and changed the outcome of our data. The amount of drops added could've affected the results, because if too little was added to the egg parts, then you wouldn't be able to tell if the part reacted to the solution. The time could've affected it too because if a person decided that none of them were changing, they could've just assumed that even though it was going to react after a little more time. Due to these errors, in future experiments I would recommend to have people read the instructions more carefully, especially when having to do exact measurements of liquids. Also, I think that we shouldn't rush through things and just take our time so that we could focus on the labs more.

This lab was done to demonstrate the four macromolecules that we learned in one of our vodcasts. From this lab I learned how to find out what macromolecules are in certain parts of eggs and why they are present in certain macromolecules by conducting experiments which helped me understand the concept of where macromolecules are present and their purpose. Based on my experience from this lab, I now know how to tell and test to see if any macromolecules are present and I know what macromolecules are present in certain parts of eggs.