1. Characteristics of Life Review

2. 6 Characteristics Needed to be Living
Made of cells
Sense and respond to change
Reproduce
Have DNA
Use Energy
Grow & Develop

3. Made of Cells

4. Senses and Responds to Change
STIMULUS: Anything that causes a reaction or change in an organism.
Examples:
Light
Temperature
Food

5. Homeostasis
Internal balance – the changes an organism makes inside its body in response to changes in the environment

6. Homeostasis Examples Sweating when you get hot
Shivering when you get cold
Urge to eat when hungry
Lizard laying in sun to get warm
Bird puffing up when cold

7. 2 types of reproduction – Sexual and Asexual
Reproduces
2 types of reproduction – Sexual and Asexual
What is the difference between the two?

8. Have DNA
DNA controls the structure and function of cells AND contains all the cell’s information

9. HEREDITY the passing of traits from one generation to the next
Example: My mom has brown hair so I have brown hair
Non-example: My mom is good at piano so I am good at piano

10. Use Energy ENERGY: the ability to cause a change
Example: wind, water, food, electric, elastic

11. Grow and Develop
Cells can get larger
Cells can divide

12. Decide which characteristic of life best applies to the following situations
(There may be more than one)

13. A bacterium splitting in half

14. In winter birds migrate (move to another area)

15. A bear hunting

16. A plant getting taller

17. Tissue

18. Every generation of rabbits is brown

19. In the spring, dogs lose some of their fur

20. A plant absorbing light from the sun

21. A frog eating a cricket