Cell Organelles

cell (plasma) membrane

• separates internal environment from external

• has a hydrophobic interior

• selective permeability

cell wall

cytoskeleton

nucleus

• houses genetic instructions

• made up of chromatin and chromosomes

nuclear envelope

• membrane that encloses the nucleus

• separates contents from cytoplasm

nucleolus

• ribosome synthesis (rRNA and protein)

smooth endoplasmic reticulum

• synthesizes lipids

• stores calcium

• detoxification of cells

rough endoplasmic reticulum

• has bound ribosomes

• produces proteins which are distributed by vesicles to membrane or outside of the cell