Hydrophobic molecules:

• A. Are polar covalent molecules.
• B. Easily dissolve in water.
• C. Are nonpolar water 'fearing' molecules.
• D. Are nonpolar water 'loving' molecules.

Answer: (C)

Verified step by step guidance

1. Understand the term 'hydrophobic': In anatomy and physiology, hydrophobic refers to molecules that repel water. The prefix 'hydro-' means water, and '-phobic' means fearing, so hydrophobic molecules are water-fearing.
2. Identify the nature of hydrophobic molecules: Hydrophobic molecules are typically nonpolar. This means they do not have a charge distribution that attracts water molecules, which are polar.
3. Contrast hydrophobic with hydrophilic: Hydrophilic molecules are water-loving and are usually polar, allowing them to dissolve easily in water. Hydrophobic molecules do not dissolve in water due to their nonpolar nature.
4. Evaluate the options given: The correct description of hydrophobic molecules is that they are nonpolar and water-fearing, as opposed to polar covalent or water-loving.
5. Apply this understanding: When encountering questions about molecular interactions with water, remember that nonpolar molecules are hydrophobic and do not mix well with water, while polar molecules are hydrophilic and do mix well.