Practice question · Put in order
Arrange these levels of biological organisation from smallest to largest.
- Cell
- Organelle
- Organism
- Macromolecule
- Atom
- Tissue
Hints
- Start with the smallest chemical unit.
- A tissue is a group of similar cells working together.
Show the answer
- Atom
- Macromolecule
- Organelle
- Cell
- Tissue
- Organism
Why
Biology is organised hierarchically, and each level has properties the level below does not, a property biologists call emergence. The cell is the first level that is unambiguously alive.
Practise What Is Life? The Chemistry of Living Things
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