Nucleus: Double membrane with pores → controls what goes in/out for protein production.
Cell Membrane: Semi-permeable → lets good stuff in, waste out.
Rough ER: Ribosomes on surface → makes proteins efficiently.
Golgi Body: Stacked sacs → sort and send proteins/lipids easily.
Mitochondria: Folded inner membrane → more surface for energy production.
Vacuole: Membrane sac → stores stuff safely and moves it around the cell.