Question

Each phospholipid in the plasma membrane bilayer has

• A. Hydrophobic heads and Hydrophilic tails
• B. Hydrophilic heads and Hydrophobic tails
• C. Both the head and the tail are hydrophilic
• D. Both the head and the tail are hydrophobic

Answer 1

The correct option is B Hydrophilic heads and Hydrophobic tails

The phospholipid bilayer consists of two layers of phospholipids, with a hydrophobic, or water-hating interior, and a hydrophilic, or water-loving exterior. The hydrophilic (polar) head group and hydrophobic tails (fatty acid chains) are depicted in the single phospholipid molecule.