The correct order from smallest to largest is macromolecules >> organelles >> cells >> tissues >> organs >> organ system.
- A macromolecule is a biomolecule (e.g., a protein), which is composed of atoms.
- Organelles are cellular structures present in eukaryotic cells.
- A tissue is a group of cells that work together to perform a specific function.
- Organs are organized in organs systems that perform specific (specialized) functions.
In conclusion, the correct order from smallest to largest is macromolecules >> organelles >> cells >> tissues >> organs >> organ system.
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