Structural Complexity in Living Things
From Atoms to Organisms
Draw a picture of an atom and a cell on your paper. Label as many parts as
possible.
Atom
Cell
Cell
Figure 1.1
Organismal levelHuman organisms are made up of many organ systems.
Organ system levelOrgan systems consist of different organs that work together closely.
Organ levelOrgans are made up of different types of tissues.
Chemical levelAtoms combine toform molecules.
Smooth muscle cell
Cellular levelCells are made up of molecules.
Molecules
2Atoms
1
Tissue levelTissues consist of similar types of cells.
3
Smoothmuscletissue
Epithelialtissue
Smoothmuscletissue
Connectivetissue
Bloodvessel(organ)
4
5
Cardio–vascularsystem
6
Bloodvessels
Heart
Figure 1.1, step 1
Figure 1.1, step 2
Figure 1.1, step 3
Figure 1.1, step 4
Figure 1.1, step 5
Figure 1.1, step 6
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