Which of the given structures (A, B, or C) represents molecules that provide energy and are very soluble in water?
9. Which of the given structures (A, B, or C) represents hydrophobic molecule that is used as storage of energy?
10. Maria wanted to determine what types of biomolecules are present in the three unknown substances that her teacher gave her. The table below shows her
results.
Substance
A
B
C
Iodine Test
Black solution (+)
(-)
Biuret Test
(+)
(-)
Which of the following statements is TRUE?
a. Substances A and B are proteins while substance C is a lipid.
b. Substance A contains starch and substance B and C contain nucleic acid
c. Substances A and C are carbohydrates where A is an amylose in starch and B is a protein and C may be a simple sugar
d. Substance B is a carbohydrate and substances A and C are lipids
