Slide Levels of bio organization
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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
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Atom
Molecule
Macromolecule
Organelle
Cell
Tissue
Organ
System
Organism
Population
Community
Ecosystem
Biome
Biosphere
