For 10 points, name this thin, deformable structure that encloses the cytoplasm.
The majority of molecules in this thing are synthesized from CDP-choline. Integrins pass through it to couple microfilaments to the ECM. One ATPase in it maintains this structure's resting potential by actively exchanging 3 of one ion for 2 of another; that is the sodium-potassium pump. In some bacteria, the periplasm lies outside it. The tonicity of an animal cell is defined by the pressure gradient across it. Clathrin may coat vesicles that bud off of it during endocytosis. It broadly consists of mosaic of proteins embedded in a fluid-like phospholipid bilayer, and sometimes lies beneath a cell wall. For 10 points, name this thin, deformable structure that encloses the cytoplasm.
The majority of molecules in this thing are synthesized from CDP-choline.
cell membrane [or plasma membrane; do not accept "cell wall"]