Egg Macromolecules Lab

In this lab we asked the question, can macromolecules be identified in an egg cell? We made 3 different claims, one for each part of the egg. For the egg yolk we said, If lipids and proteins make up egg yolks, their respective solutions will change color from red to orange for lipids and from blue to purple for proteins. For the egg membrane we said, If lipids and proteins make up the egg membrane, their respective solutions will change  from red to orange for lipid, and blue to purple for protein. Lastly for the egg white we said, If proteins and monosaccharides make up the egg white, their respective solutions will change color from blue to purple for proteins and from blue to green to orange for monosaccharides. However, when we did the experiment, we found that some of our hypothesis were wrong. In the egg yolk, we found that in addition to lipids and proteins, it contained monosaccharides as well because the solution turned completely green (rate 10/10), signifying there definitely were monosaccharides. Additionally, in the membrane we found that in addition to lipids and proteins, there are monosaccharides in there as well as the solution turned a blueish purple which signified that there was not an overwhelming amount of monosaccharides in the membrane ut still some. Lastly, our hypothesis for egg whites proved itself to be true. 

There could have been some errors that affected the outcome of our data. For an example, in the lipid test, the egg white was not mixed with the Sudan III solution, and our data came out as no lipids in the egg white. However if the solution had been thoroughly mixed, our data could have came out differently. Another possible error in this lab is that polysaccharides tested as being nowhere in the egg. This might be true, or there might have been an error in our lab. We might not have put enough iodine into the solution for the results to show up clearly, because in all four test tubes nothing changed color.

This lab was done to demonstrate the different macromolecules and where they can be found. In this lab I learned where different macromolecules are found in a cell, which helps me understand the cell as a whole and it's functions. For an example, lipids and proteins and monosacharides and usually found in cell walls and membranes, which is why they are in the egg membrane to protect the chick. Based on my experience in this lab, I now know where the different macromolecules are in a cell and most importantly why they are there. This can help expand my knowledge later on when we dive in deep about cells and their functions.