Cells and their components are measured according to the metric system:
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Relative Sizes of Biological Materials
- Eukaryotic cell (plant) = ~100 μm
- Eukaryotic cell (animal) = ~10 – 50 μm
- Organelle (e.g. mitochondrion) = ~1 – 10 μm
- Prokaryotic cell (bacteria) = ~1 – 5 μm
- Virus = ~100 nm
- Plasma membrane = ~7.5 nm
- Molecules (e.g. glucose) = ~1 nm
- Atoms = ~100 pm
Link: Cell Size and Scale – Learn Genetics
Diagram of Relative Scale of Biological Materials
