The correct order of the organization levels from smallest to largest is nucleus, cell, tissue and organ.
Living organisms have different forms of classification, one of them is from the levels of organization. This classification refers to complexity and size. The levels from least to greatest complexity are:
- Nucleus: The nucleus is the hard center mass, present in an atom, it is even the smallest entity which cannot be detected but can be analyzed.
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Cell: Basic unit of structure and function of all living things.
- Tissue: Group of cells of the same type.
- Organs: Structure composed of one or more types of tissue. The tissues of an organ work together to fulfill a specific function.
Thus, we can conclude that the correct order of the organization levels from smallest to largest is nucleus, cell, tissue and organ.
Learn more about the living organisms here:
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