Question

Phospholipid molecules in a membrane are arranged with their on the exterior and their on the interior a hydrophobic headshydrophilic tails hydrophilic heads hydrophobic tails hydrophobic tails hydrophilic heads nonpolar heads polar tails

Answer 1

Phospholipid molecules in a membrane are arranged with their **hydrophilic heads** on the exterior and their **hydrophobic tails** on the interior. This arrangement forms a bilayer that is essential for the structure and function of cell membranes, allowing them to maintain a distinct internal environment.