How are the Phospholipids Arranged to Form the Plasma Membrane

Question

How are the phospholipids arranged to form the plasma membrane?
A)single layer with hydrophilic heads outward
B)double layer with hydrophobic tails facing inward toward each other
C)double layer with hydrophilic heads facing inward toward each other
D)double layer with phospholipids on the outside and proteins on the inside

Accepted Answer

Phospholipids arrange themselves as a double layer in the plasma membrane, with the hydrophobic tails facing inward towards each other and the hydrophilic heads facing outward towards the aqueous environment inside and outside the cell. This is known as the phospholipid bilayer.