6th Grade Science Key Terms

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Cell

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The basic unit of life that makes up all living things.

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Cell Theory

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A scientific theory that states all living things are made of cells, cells are the basic unit of life, and all cells come from existing cells.

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Microscope

Back

A tool that makes small objects look larger, allowing us to see cells.

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Unicellular

Back

An organism made up of only one cell.

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Multicellular

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An organism made up of more than one cell.

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Prokaryote

Back

A simple, single-celled organism without a nucleus.

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Eukaryote

Back

An organism whose cells have a nucleus. Eukaryotic cells make up all plants and animal cells.

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Example of a Eukaryotic Cell

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A plant or animal cell.

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Example of a Prokaryotic Cell

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A bacterial cell.

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Organelle

Back

A small structure within a cell that performs a specific function.