Levels of Organization

ATOMS Smallest part of matter NON-living Parts of the atom Proton Neutron electron

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 Pro vs Euk Types of Euk

Tissue The same kind cell working together Living

Organs Tissues that work together Living Types of organs

Organ Systems Organs that work together Ex????

Organism Entire living things (organisms) Usually made of systems May be a single cell Living

Population Group of organism living in the same area and having the ability to interbreed

Community Several populations living together Population interact

Ecosystem multiple communities of biotic (living) and abiotic (nonliving) factors interacting

Biome interacting ecosystems with similar climate Desert Grassland Tundra aquatic

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

Tissue Organ System Organism Atom Molecule Macromolecule Organelle Cell Tissue Organ System Organism Population Community Ecosystem Biome Biosphere