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Levels of Organization: From Atoms to Biosphere

Explore the hierarchy of life from the tiniest particles, atoms, to the vast living ecosystems of the biosphere. Discover how atoms form molecules, macromolecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, biomes, and the interconnected biosphere. Learn how these levels interact and function together within the web of life.

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Levels of Organization: From Atoms to Biosphere

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  1. Levels of Organization

  2. Atoms • Smallest part of matter • NON-living

  3. Molecules • 2 or more bonded atoms • Form compounds • NON-living

  4. Macromolecule • Very large molecules • Proteins, fats, carbohydrates • NON-living

  5. Organelles • “Tiny organs” • Made of macromolecules

  6. Cells • Made of organelles • Basic unit of structure & function • LIVING

  7. Tissues • The same kind cells working together • LIVING

  8. Organs • Tissues that work together. • LIVING

  9. Organ Systems • Organs that work together • LIVING

  10. Organisms • Entire living things • Usually made of systems • May be a single cell • LIVING

  11. Population • Same type of organism living together.

  12. Community • Several populations living together • Populations interact

  13. Ecosystem • A biotic (living) community plus the abiotic (nonliving) features

  14. Biome • Similar ecosystems on earth together

  15. Biosphere • Whole living layer around the globe • Includes abiotic features http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html

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