Difficulty: Medium
Average Score: 75%
Entry Exam
In a phospholipid, the head:
Correct answer
D
Rationale
The head of a phospholipid is hydrophilic, meaning it is water-loving, and faces the outer side of the lipid bilayer. This arrangement allows the hydrophilic head to interact with water while the hydrophobic tails are shielded from it. Therefore, option D, 'Both A and C,' is the correct answer as the head is hydrophilic and faces the outer side of the layer.