1. 5 Minute Brainstorm: What is SCIENCE? What is BIOLOGY?
What characteristics do things that are “Alive” share?

2. The Scientific Method

3. What Is Life? Capture and use of energy and raw materials
Sense and respond to the environment
Capacity to grow, reproduce, and develop
Tendency to evolve

4. UNIVERSAL #1: Molecules of Life
All things are made up of the same units of matter (atoms, molecules)
Living things are made of up of a certain subset of molecules:
nucleic acids, proteins, carbohydrates, and lipids

5. UNIVERSAL #2: DNA The signature molecule of life
Molecule of inheritance
Directs assembly of amino acids

6. UNIVERSAL #3: Nothing Lives Without Energy
Energy = Capacity to do work
Metabolism = Reactions by which cells acquire and use energy to grow, survive, and reproduce

7. UNIVERSAL #4: Sensing and Responding
Organisms sense changes in their environment and make responses to them

8. UNIVERSAL #5: Homeostasis
Maintenance of internal environment within range suitable for cell activities
Example: Pancreas maintains level of sugar in blood by secreting hormones

9. UNIVERSAL #6: Basic Unit of Life = The Cell
Characteristics of life emerge at the level of cells
A cell is the smallest unit having the capacity to live and reproduce

10. Universal #7: Life is ORGANIZED
Increasing Levels of Organization:
Cell
Multicelled Organism
Population
Community
Ecosystem
Biosphere

11. UNIVERSAL #8: Interdependencies Among Organisms
Producers
Make their own food
Consumers
Depend on energy stored in tissues of producers
Decomposers
Break down remains and wastes

12. UNIVERSAL #9: Unity of Life
All organisms:
Are composed of the same substances
Sense and respond to the environment
Have the capacity to reproduce based on instructions in DNA
How would a biologist explain this UNITY??

13. UNIVERSAL #10: Diversity of Life
Millions of living species
Additional millions of species now extinct
How would a biologist explain this DIVERSITY??

14. Explaining the Paradox of Unity and Diversity: Evolution

15. What must a cell be able to do in order to survive and reproduce??
For Now, Back to Cells
What must a cell be able to do in order to survive and reproduce??