Biology 14

1. 3. A subunit of protein is a(n)

Amino acid.

Nucleic acid.

Fatty acid.

Phospholipid.

2. 2. Saturated fats differ from unsaturated fats in that saturated fats

Are longer.

Lack carbon-carbon double bonds.

Have fewer double bonds.

Cannot be used for an energy source.

3. 1. Which of the following is NOT a lipid?

Olive oil

Fat

Amino acid

Steroid

4. 6. A fatty acid having double bonds between carbon atoms is a(n)

Phospholipid.

Animal fat.

Unsaturated fat.

Saturated fat.

5. 9. Storage of energy is a MAJOR function of

Protein.

Fats.

Steroids.

Nucleic acids.

6. 10. Triglycerides contain three fatty acids and

One glycerol.

Two glycerols.

Three glycerols.

Four glycerols.

7. 8. Which of the following is made primarily of protein?

Skin

Tendon

Enzyme

Carbohydrates

8. 7. CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-COOH is a(n)

Fatty acid.

Amino acid.

Glycerol.

Steroid.

9. 4. Which of the following types of molecules contain the most energy per gram?

Sugar

Carbohydrate

Saturated fat

Starch

10. 5. Which of the following is a function of proteins?

Contain information for the cell.

Serve as a subunit in the structure of fat.

Reduce the weight of an individual.

Speed up certain chemical reactions.