A student conducted an experiment on an unknown food to determine the presence of macromolecules. The results are as follows: Benedict’s test= blue, Iodine test= dark red, Biuret test= violet, Sudan IV= dark red. Using the indicator chart below and the information in the chart above, which macromolecules were present? Select all that apply. a. carbohydrates

b. lipids

c. nucleic acids

d. proteins

INDICATOR
Benedicts
Iodine
Biuret
Sudan IV
NEGATIVE
TEST
blue
dark red
blue
dark red
POSITIVE
TEST
orange
black
violet,
reddish-
orange

To get into Challenge 2 you must know the monomer of the macromolecule from the correct answer.