General Subdivisions of a cell A Nucleus B. Plasma (regulatory center of the Membrane ce (selectively permeable boundary C Cytoplasm between the (everything cell and the between the environment dlasma pl membrane and the nuclear Organelles are individual compartments in the cytoplasm compartment5 General Subdivisions of a Cell A. Nucleus (regulatory center of the cell) B. Plasma Membrane (selectively permeable boundary between the cell and the environment) C. Cytoplasm (everything between the plasma membrane and the nuclear compartment) Organelles are individual compartments in the cytoplasm