Final answer:
The statement that is FALSE about phospholipid bilayer structure is that the membrane contains a double layer of proteins.
Step-by-step explanation:
The statement that is FALSE about phospholipid bilayer structure is: d. the membrane contains a double layer of proteins.
A phospholipid bilayer is the basic structure of the plasma membrane, consisting of two layers of phospholipids with their hydrophilic heads facing the aqueous external and cytosolic environments, and their hydrophobic tails interacting and facing each other in the interior of the membrane. Membrane proteins are embedded within the phospholipid bilayer, not forming a double layer themselves.