Biology / Unit 2 Bio 0249 short lesson, about 20 seconds
Structure of a Prokaryotic Cell
Captions available
The idea
A prokaryotic cell keeps its DNA in a central region, the nucleoid, and typically carries a peptidoglycan wall outside its membrane.
In practice
A bacterium's chromosome sits free in the nucleoid, unenclosed by any membrane — the absence Bio 0067 defines a prokaryote by.
Where people slip
The nucleoid is a cytoplasmic region, not an organelle — it has no membrane of its own.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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