collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.

idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells.

structure that contains the cell’s genetic material (DNA) and controls the cell’s activities.

organism whose cells contain nuclei.

unicellular organism lacking a nucleus.

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Cells Unit 2

Term	Definition
Cell	collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.
Cell theory	idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells.
Nucleus	structure that contains the cell’s genetic material (DNA) and controls the cell’s activities.
Eukaryote	organism whose cells contain nuclei.
Prokaryote	unicellular organism lacking a nucleus.