nscu 302 wk 6 3
Post on 29-Nov-2014
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Levels of Organization
ATOMS• Smallest part of matter
• NON-living
Molecules • 2 or more bonded atoms
• Form compounds
• NON-living
Macromolecule• Very large molecules
• Proteins, fats, carbohydrates, nucleic acids
• NON-living
Organelles• “Tiny organs”
• Made of macromolecules
Cell• Made of organelles
• Basic unit of structure & function
• LIVING
Tissue• The same kind cell working together
• Living
Organs• Tissues that work together
• Living
Systems• Organs that work together
• Living
Organism• Entire living things (organisms)
• Usually made of systems
• May be a single cell
• Living
Population• Same type of organism living together
Community• Several populations living together
• Population interact
Ecosystem• A biotic (living) community plus the abiotic (nonliving) features
Biome• Similar ecosystems on earth together
Biosphere • Whole living layer around the globe
• Includes abiotic features
http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html
AtomMolecule
MacromoleculeOrganelle
Cell
TissueOrgan
SystemOrganism
PopulationCommunityEcosystem
BiomeBiosphere
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