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6 Cards in this Set

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Chemical/Molecular Level
At the chemical level, atoms interact to form compounds with distinct properties. 99% of these compounds include hydrogen, oxygen, carbon, and nitrogen.
Cellular Level
The cellular level of organization includes cells, the smallest living units in the body. Cells contain internal structures called organelles. Cells and their organelles are made up of complex chemicals.
Tissue Level
Group of cells and the materials surrounding them that work together on one task. The four basic tissue types are epithelial, connective, muscle, and nervous.
Organ Level
Grouping of two or more tissue types into a recognizable structure with a specific function.
Organ System
Collection of related organs with a common function. Sometimes an organ is part of more than one system.
Organismic Level
One living individual.