Question Detail
Question
Membrane phospholipids: a. Have hydrophilic heads that face outward & are exposed to water b. Have hydrophobic tails that face inward & are shielded from water c. Both A & B are correct d. None is correct
Correct Answer
Option C is the correct answer.
Detailed Explanation
This arrangement is the fundamental property of the phospholipid bilayer. The hydrophilic heads are oriented outward, interacting with the aqueous extracellular and intracellular environments. The hydrophobic tails are oriented inward, away from water, creating a stable barrier.
Hint
Both parts of the phospholipid are arranged to satisfy their water-related preferences.