The difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by the ________.
A) interconnection of most intracellular membranes to the nuclear envelope
B) transportation of membrane lipids among the membranes of the endomembrane system by small membrane vesicles
C) function of the Golgi apparatus in sorting and directing membrane components
D) modification of the membrane components once they reach their final destination
E) synthesis of different lipids and proteins in each of the organelles of the endomembrane system

Question

Quizplus · Accepted Answer

The Golgi apparatus plays a key role in sorting and directing membrane components to their respective destinations within the endomembrane system. This sorting process determines the lipid and protein composition of each membrane. While modifications can occur once components reach their final destination, it is the initial sorting process that largely determines the differences between membranes. The other options may play a role in the overall organization of the endomembrane system, but they do not directly determine the differences in lipid and protein composition between membranes.

The Difference in Lipid and Protein Composition Between the Membranes