1. Characteristics of Life
Unit 2

2. Alive, Not Alive, Once was Alive?
Dog
Paper
Dirt
Yogurt
Water
Cell phone
Radish seed
Milk
Fire
Yeast
Bacteria
Mold

3. Made of one or more cells
The smallest unit of life are cells
Cells are incredibly small, but have organelles to provide all life functions
Organisms can be single celled or multicellular

4. Respond to Stimuli Organisms respond to stimuli or changes
Stimuli can include light, temperature, sound, gravity, water, chemicals, etc.
Many organisms respond with movement, including plants

5. Reproduce Organisms need the ability to pass on their traits
Reproduce sexually or asexually

6. Growth All organisms grow, even single celled organisms
Organisms need to be able to repair or replace damaged cells

7. Adapt and Evolve
Some individuals are better suited for their environment then others
The traits that enable those organisms to survive are called adaptations
Adaptations are passed on to offspring

8. Maintain Homeostasis
Homeostasis is the ability to maintain balance so the organism can carry out all its life functions
Example: human body temperature is degrees. We sweat when we are too warm or shiver when we are too cold.

9. Obtain and Use Energy
Living things require energy to reproduce, respond to stimuli, grow and develop
The energy is a result of chemical reactions that occur inside cells