Enables cells to exist in a hostile environment
Regulates what comes into and goes out of the cell
Protects the contents of the cell
the regulation of an organism's internal environment to maintain conditions suitable to life.
made up of two layers
Made up of lipid molecules
Proteins are embedded in the lipid bilayer
have polar water soluble head attached to a long, insoluble tail.
fluid mosaic molecule
molecules are free to move sideways within the cell
allows membrane to become more rigid/stronger
Act as markers recognized by chemicals on the inside of and outside of the cell