1. Structural Complexity in Living Things From Atoms to Organisms

2. Draw a picture of an atom and a cell on your paper. Label as many parts as possible.

4. Atom

5. Cell

7. Figure 1.1 Organismal level Human organisms are made up of many organ systems. Organ system level Organ systems consist of different organs that work together closely. Organ level Organs are made up of different types of tissues. Chemical level Atoms combine to form molecules. Smooth muscle cell Cellular level Cells are made up of molecules. Molecules 2 Atoms 1 Tissue level Tissues consist of similar types of cells. 3 Smooth muscle tissue Epithelial tissue Smooth muscle tissue Connective tissue Blood vessel (organ) 4 5 Cardio– vascular system 6 Blood vessels Heart

8. Figure 1.1, step 1

9. Figure 1.1, step 2

10. Figure 1.1, step 3

11. Figure 1.1, step 4

12. Figure 1.1, step 5

13. Figure 1.1, step 6