The difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by
a) the physical separation of most membranes from each other.
b) the transportation of membrane among the endomembrane system by small
membrane vesicles.
c) the function of the golgi apparatus in sorting membrane components.
d) the modification of the membrane components once they reach their final destination.
e) the synthesis of lipids and proteins in each of the organelles of the endomembrane system