Concepts Covered on the Macromolecule Quiz

Concepts Covered on the Macromolecule Quiz

1. When Biuret reagent is added to an unknown solution, the solution turns purple. This indicates the presence of which macromolecule?

A. LipidsC. Carbohydrates

B. ProteinsD. Nucleic Acids

2. The monomer units of proteins are called ______.

A. NucleotidesC. Amino acids

B. TriglyceridesD. Monosaccharides

3. ______are used for long-term energy storage, insulation, and protective coatings.

A. Nucleic AcidsC. Proteins

B. LipidsD. Carbohydrates

4. A nucleotide is composed of:

A. Three phosphate groups and a sugarC. A sugar, phosphate, and nitrogen base

B. A glycerol molecule and three fatty acidsD. A phosphate and two fatty acids

5. Glycogen, starch, and cellulose are examples of

A. MonosaccharidesC. Polysaccharides

B. DisaccharidesD. Simple sugars

6. Which two functional groups are found in amino acids?

A. Hydroxyl and aminoC. Carboxyl and amino

B. Amino and phosphateD. Carbonyl and hydroxyl

7. Enzymes are types of ______.

A. ProteinsC. Nucleic acids

B. CarbohydratesD. Lipids

8. Which nitrogen base is found in DNA but not in RNA?

A. Adenine (A)C. Thymine (T)

B. Cytosine (C)D. Guanine (G)

9. A student tests an unknown colorless solution for the presence of sugars, starches, lipids, and proteins. The results are shown in the table below.

Based on the data collected, which molecules are present in the unknown solutions?

A. Starches and lipidsC. Sugars and proteins

B. Proteins and starchesD. Lipids and proteins

10. The most important function of nucleic acids is

A. Increasing rate of chemical reactions. C. Storing energy

B. Forming a barrier between the inside D. Storing information related to heredity and

and outside of a cell. protein synthesis

11. In order to become stable, carbon forms ______covalent bonds with other atoms.

A. TwoC. Four

B. ThreeD. Eight

12. ______solution is used to test for the presence of lipids in a material.

A. IodineC. Sudan IV

B. Benedict’sD. Biuret

13. What macromolecule is shown in the picture below?

A. Nucleic acidC. Lipid

B. ProteinD. Carbohydrate