Biological Macromolecules Lab Homework Help | Page 2

Glucose
In each of the two tests (starch and sugar) a positive and negative control was used. What was
the positive control in each of the tests and what was the negative control. Explain your answers
Did the Benedict’s test for reducing sugars net a positive or negative result for milk? Research
the sugar content of milk and the definition of a reducing sugar to explain if your result is what
you would expect
Based on your results, is sugar and/or starch present in your Unknown? Use your results to
explain your answer
Exercise 2: Proteins and Lipids
Data Table 3.​ Biuret’s Reagent Data.
Sample
Initial Intermediate Final Protein
Color Color Color Present in
Sample?
Y or N
dH​ 2​ O