Ch 3 Cell Structure and Function 3.1

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McDougal-Littell Biology Text

cell

basic unit of life

cell theory

* all organisms are made of cells
* all existing cells are produced by other living cells
* the cell is the basic unit of life

cytoplasm

jelly-like substance that contains molecular building blocks

organelles

specialized structures within cytoplasm that perform distinct processes

prokaryotic cells

no nucleus or bound organelles; DNA is found throughout cytoplasm; single-celled organisms

eukaryotic cells

has nucleus and bound organelles; DNA is found within nucleus; single or multi-celled organisms

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