1. Characteristics of Living Things

2. All Living Things Share Common Characteristics
What do you think are characteristics that make something living?

3. Living Things Are Made Up of Cells
Smallest living unit
Unicellular/Multicellular
Complex, highly organized

4. Based on Universal Genetic Code
Stores info needed to live, grow and reproduce in DNA
Info copied  passed on to offspring
Almost identical in every organism on Earth

5. Living Things Reproduce
Sexual Reproduction
Sex cells from 2 parents unite (plant/animal)
Asexual Reproduction
Single organism produces clone of itself (bacteria)

6. Growth and Development
Cells begin to differentiate
Look different
Perform different functions

7. Maintain Stable Environment
Keep internal environment stable even though external conditions change
Homeostasis

8. Respond to Their Environment
Detect and respond to signals (stimulus) from their environment

9. Obtain and Use Material/Energy
Energy needed to grow, develop, function and reproduce
Metabolism- sum of all chemical reactions in an organism
SUN is main source for all life
6O2 + C6H12O CO2 + 6H2O

10. Taken as a Group, Living Things Evolve
Change over time
Links all life forms to common origin
Evidence found in living/fossil organisms
DNA

11. LIFE IS ORGANIZED ON MANY LEVELS

12. Atoms
Molecules
Organelles
Cells – life starts here
Tissues
Organs
System
Organism
Population
Community
Ecosystem
Biosphere