Question

fluid boundary surrounding all cells made primarily of lipids​

Answer 1

Answer:

Plasma membrane and cytoplasm

Structure and function of the plasma membrane and cytoplasm of cells. Also covers the phospholipid bilayer and microvilli.

Answer 2

Answer:The plasma membrane of the cell defines the cell boundary. This membrane by mass is about half lipid and half protein. The plasma membrane of a cell exemplifies the basic compartmental function of membranes: it separates and delineates the intracellular space from the extracellular space