The student tested their favorite food, spaghetti sauce, in a science lab. They used Benedict's solution to test for glucose, iodine to test for starch, and Biuret's reagent to test for protein. The results showed the sauce contained glucose, starch, protein, and fat. Specifically, the student's mother's homemade sauce contained only a small amount of glucose and starch. The chicken used in the sauce contained a small amount of fat. The mother's sauce contained a lot of protein due to added vegetables.