Egg Cell Macromolecules Lab Conclusion

Macromolecules Lab Conclusion

C.E.R

In this lab we asked the question: “Can macromolecules be identified in an egg cell?” We found that at least one macromolecule was found in any part of the egg. In the yolk, there were proteins, lipids, monosaccharides, and polysaccharides. In the egg white, there were proteins, monosaccharides, lipids, and polysaccharides. In the membrane, there were proteins, lipids, and polysaccharides. This data supports our claim because lipids are known to make up parts of the membranes, proteins are required for growth structural development, and monosaccharides and polysaccharides are required for energy.

P.E

Our data agrees with the expected results because we were expecting to find proteins in the yolk, lipids in the white, and polysaccharides in the membrane. We had a few errors. First was the amount of yolk, white, and membrane that we used wasn’t the same throughout the whole lab. We might have used too much yolk, or too much white, and we could have prevented this error by being more precise with our measurements. Another mistake we could have accidentally made was the amount of test substance, such as iodine, sudan 3, or the benedicts. Based on how much we put in, we could have gotten varied results. We could have prevented this error in the same way, by being more precise with measurements. We could have improved the lab by being more careful with our egg preparation, so we could get more accurate results, and by being more accurate with the amount of substance that we put into each part of the egg.

P.A

This lab was done to determine which macromolecules are existent in which parts of an egg. From this lab i learned what is inside of an egg, and what nutrients it provides to the chickens inside. Based on my experience from this lab i can eat eggs knowing that i am eating lipids, monosaccharides, polysaccharides, and protein.

Egg Membrane

              The egg membrane tested positive for Lipids. Our experiment showed us that when Sudon 3 was added to the membrane, it changed colors to pink. This supports our claim because it started out as white, and color change signaled presence of lipids.

Egg White

              The egg white tested positive for proteins. Our experiment showed us that when NaOH and CuSO4 were added to the egg white, the egg white changed from yellow to pink. This supports our claim because of the color that it was supposed to turn to (purple). Since it was closer to this color than it was its starting color, this signaled presence of proteins.

Egg Yolk

              The egg yolk tested positive for lipids. Our experiment showed us that when iodine was added to the yolk, it changed colors to orange. This supports our claim because it originally started as yellow, but turned to orange as expected from something containing lipids.