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Slide Levels of bio organization

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


Atom
Molecule
Macromolecule
Organelle
Cell

Tissue
Organ
System
Organism

Population
Community
Ecosystem
Biome
Biosphere



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