Biology / Unit 2 Bio 0247 short lesson, about 20 seconds
Four Components Every Cell Shares
Captions available
The idea
Every cell, prokaryotic or eukaryotic, shares a plasma membrane, cytoplasm, DNA, and ribosomes.
In practice
A bacterium and a human skin cell differ enormously in complexity but both carry all four of these components.
Where people slip
Sharing these four components is what makes something a cell at all — the prokaryote/eukaryote split concerns what else is added on top.
Your place on the trail
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Builds on
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