The plasma membrane of the cell exhibits what?
Selective permeability, that is, it allows some substances to cross it more easily than others.
What type of molecule is a phospholipid?
An amphipathic molecule, meaning it has both a hydrophilic (“water-loving”) region and a hydrophobic (“water-fearing”) region
True or False? most membrane proteins are amphipathic.
True
A membrane is held together mainly by what?
hydrophobic interactions which are much weaker than covalent bonds