1. What makes something living?
The characteristics of life

2. 1) Living things are composed of cells
Cells are the basic unit of life.
Some organisms are only one cell.
Others are made of many cells

3. 2) Living things are organized
Organisms have parts that do certain jobs.
Examples:
Bones provide structure
Blood transports oxygen
Single-celled organisms have hairs that help them move

4. 3) Living things maintain homeostasis
Homeostasis is maintaining a stable internal environment.
Examples:
Temperature pH
Blood sugar

5. 4) Living things obtain and use energy
Organisms can get energy from food (animals) or directly from the sun (plants).
Metabolism - all the chemical reactions taking place in an organism.

6. 5) Living things respond to stimuli
Examples of stimuli (singular = stimulus)
Light
Temperature
Pressure
Gravity
Smell
Water
Responses in plants

7. 6) Living things grow and develop
Growth = getting bigger
Development = changing throughout life
Metamorphosis

8. 7) Living things reproduce
Making new organisms.
Asexual = 1 parent
Unicellular organisms
Sexual = 2 parents
“everything else”

9. 8) Living things adapt through evolution
Evolution = change in the genes of a population over time.
Adaptations = behaviors or structures that help organisms survive.