State the functions of the rER, sER, Golgi and the trans Golgi Network. Describe how a cell's specialized function are embodied in its structure. State the signal hypothesis. Describe how a forming proteins' structure can act as a signal to determine its route through the cell and its final destination. State the concept of membrane flow and reconcile this hypothesis with that of membrane differentiation.
All cells have some.
Specialized cells may have a lot. The amount present can be regulated up or down depending on cell need. Synthesis of new membrane lipid Flippases in ER allow movement of lipids across the lipid bilayer. Absent in subsequent organelles. Drug detoxification 4.