Question

Brett learned that his car is better protected from the weather when it has been recently washed and waxed. Which best describes the major group of macromolecules that is protecting his car and how it is performing this task? A. Carbohydrates are protecting his car because they break down to create chemical energy in the paint. B. Lipids are protecting his car because they bond with water molecules to form beads of water. C. Lipids are protecting his car because their nonpolar nature makes them insoluble in water. D . Carbohydrates are protecting his car because they can provide structural support in the form of cellulose.

Answer 1

The best description of the major group of macromolecules that is protecting Brett's car after it has been washed and waxed is:

C. Lipids are protecting his car because their nonpolar nature makes them insoluble in water.

Here's why this choice is correct: The wax used on cars is primarily made up of lipids, which possess a nonpolar character that makes them water-repellent. This property allows water to bead on the surface rather than adhering to it, thus protecting the paint from water damage and other weather effects. Choices A, B, and D do not accurately reflect the role of macromolecules in the context of car protection.