Food Macromolecules Lab Report

This experiment had four parts to it, where you had to find out if the food you picked contained starch,sugar,lipids and protein.The food item that was chosen to decipher was a Big Mac and you chose what from the burger you wanted to test to see what it was made of, example like the bun of the burger. When testing you would have one test tube of water with food and the other test tube with the solution needed and food.The reason for the test tube with the water is because it was the indicator. If the product of food contained the macromolecule that was tested for it would of showed if there was any difference from the two test tubes. The results of the lab seemed mostly reasonable. The only result that didn't seem right was the cheese. Cheese is a dairy product which contains proteins however, the Big Macs cheese didn't have proteins. Other than that the lab results looked right. The food product would match up with the correct macromolecule.
The one problem that wasn't human error was the food touching each other. The lab would show if this was happening, if the food product chosen was the bun, and when tested it said to have proteins. The thought would be how is that possible? However, after thinking the possibility of this was due to the contamination of the bun and beef patty touching. Another problem that is not human error is how the food was prepared. If the food was prepared in a way that gave it supplements, it may contain something it shouldn't. Changing the results of the