Question

3.1.9-12.f
the results of the experiment most strongly support which conclusion about the polarity of lipid molecules?
○ lipid molecules are polar(hydrophilic) because they mix poorly with liquids, such as water.
○ lipid molecules are polar(hydrophilic) because they adhere tightly to smooth surfaces, such as paper.
○ lipid molecules are nonpolar(hydrophobic) because they repel water molecules, which also are nonpolar.
○ lipid molecules are nonpolar(hydrophobic) because they repel water molecules, which are polar.

Explanation:

Polar substances (hydrophilic) interact well with polar substances like water. Non - polar substances (hydrophobic) repel polar substances. Since lipid molecules mix poorly with water (a polar liquid), they are non - polar (hydrophobic).

Answer:

Lipid molecules are nonpolar(hydrophobic) because they repel water molecules, which are polar.