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What is smaller than a cell?
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The smallest organism found on Earth can be measured using a variety of different methods, and can be defined as the smallest by volume, mass, height, or length. Because there is some dispute over what the definition of life is and what entities qualify as organisms, the actual "smallest organism" may be unclear.
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An atom is smaller than a cell.
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an atom
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Organelles, chromosomes, DNA, RNA, Molecules, atoms, protons, neutrons, electrons
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the organelles found in a cell
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