Biology- study of life Organism- living thing 6 Themes of Biology Biology- study of life Organism- living thing

1. Cell Structure and Function Unicellular- made of only one cell. Multicellular- made of many cells. Differentiation- forming many cells from one fertilized egg.

2. Homeostasis The ability of the body to keep a constant internal environment Examples: Temperature, blood sugar, water levels

3. Reproduction and Inheritance Reproduction- producing offspring Inheritance- handing traits down to offspring

4. Evolution Evolution- the change in populations over time. Natural Selection- survival of the fittest

5. Interdependence of Organisms Ecology- the study of how living things are dependent on one another. Ecosystem- all of the living and non-living things in an area.

6. Matter, Energy, and Organization Autotrophs- produce their own food. Heterotrophs- organisms that need to eat other things.