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Levels Organization

Honors Biology Unit 1 Notes 1

QuestionAnswer
Atom smallest unit of matter ex. carbon, nitrogen, oxygen
Molecule a group of atoms ex. h20
Organelle structure that does a job in your cells ex. mitrocondia
Cell makes up all living things; smallest thing that meets all characteristics of life
Tissue a group of similar cells ex. lung tissue
Organ structure that does a job in your body ex. heart, brain
Organ System a group of similar organs that work together ex. digestive system
Organism one living thing ex. one dog, one human
Population a group of organisms of the same species in a particular area ex. all pigeons in central park
Community all living things in a particular area ex. the birds
Ecosystem all living things and non living things in a area ex. rocks, fish in a pond
Biome major or large ecosystem ex. desert, tundra
Biosphere all parts of earth containing living things
Created by: Taylorld
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