1. CHARACTERISTICS OF LIVING THINGS

2. 1. Made up of Cells
Unicellular – made of one cell (ex. Amoeba)
Multicellular – made of many cells (more than one – ex. Human)

3. 2. Can Reproduce
Asexual reproduction – new organism forms from a single parent
Sexual reproduction – 2 cells from different parents unite to produce a new organism

4. 3. Based on a Genetic Code
Mostly DNA (Double Helix)

5. 4. Grow and Develop
Metamorphosis

6. 5. Obtain and use Materials and Energy
Food & Oxygen
Metabolism – chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes

7. 6. Respond to their Environment
Fight or Flight
Stimulus – signal to which an organism responds
Stimulus is produced as a function of the nervous system
An organism reacts to stimuli following a pathway (neuron) through the nervous system to produce a response

8. 7. Maintaining Internal Balance
Homeostasis – process by which organisms maintain a relatively stable internal environment (ex. Body temperature – hot/cold)

9. 8. Evolution
Taken as a group, living things change over time

10. Examples – Alive, Dead or Nonliving
Bacteria
Alive
Water
Nonliving
Wooden Door
Dead
Fire