Prokaryote and Eukaryote
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A prokaryote is a cell without a membrane-bound nucleus or organelles; a eukaryote is a cell with both.
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A bacterium's DNA floats free in the cell; an animal cell's DNA sits enclosed inside a membrane-bound nucleus.
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This course keeps prokaryote and eukaryote as the two locked terms for this split — no third category sits between them.