This card explains why simple diffusion suffices for single-celled organisms but is inadequate for multicellular ones, due to differences in metabolic activity and surface area to volume ratio.
Tato karta vysvětluje, proč je jednoduchá difúze dostatečná pro jednobuněčné organismy, ale nedostatečná pro mnohobuněčné, kvůli rozdílům v metabolické aktivitě a poměru povrchu k objemu.
| Front | Why diffusion enough in single celled organisms but not multicellular 3.1.1(a) |
|---|---|
| Back | - Singular low metabolic activity (co2 production low/o2 demands low) and high SA:V - multi high metabolic activity, low SA:V, Distance from O2 supply to cells requiring too far, so simple diffusion not enough |
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