# Chapter Three: Cell biology

### Cytoplasm - Specialty structures

| This last group of cell structures described here and only grouped together for convienence. While the other structures we have talked about are found in all cells these structures are usually found only in certain kinds of cells. Animal cells generally contain centrioles. Plant cells generally contain storage vacuoles, cell walls, and plastids. Cilia and flagella are found in many different life forms. Be aware that there are many other kinds of living things besides plants and animals.

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