1. 1-2 Themes in Biology

2. Diversity & Unity of Life
Diversity: There’s lots of different living things.
Unity: All these different living things have certain things in common
A genetic code
These relationships can be shown with a “tree of life” model.

5. Three Domains 3 Categories of all living things
Bacteria, Archae, & Eukarya
Another way to categorize living things is the “Kingdom” system
6 Kingdoms
Animalia, Plantae, Fungi, Protista, Bacteria, Archaea

6. Interdependance Organisms & their environment interact
Ecology studies this
Ecosystems are communities of living things and their environments
Humans really interact with the environment

7. Evolution of Life You will change during your life
All of humanity will change over several generations
This explains the branches of the tree of life

8. Natural Selection
Some organisms have certain favorable traits that make them better able to survive and have more kids that survive.
Over time there will be more of these kids and the population will start to look different.
Differential Reproductive Success

9. 1. Name 3 Unifying themes of biology

10. How is the unity and diversity in the living world represented as a model?

11. I.D. the 3 domains

12. How are organisms interdependant?

13. Describe why evolution is important in explaining the diversity of life?

14. What is the difference between evolution and natural selection?

15. Fossil evidence shows that bats descended from shrewlike organisms that could not fly. Write a hypothesis for how natural selection might have led to flying bats.