1. Studying Life

2. What is Biology? bios means… -logy means… Biology is the
“Life”
-logy means…
“study of”
Biology is the
study of living
things.

3. 1. Made of cells A living thing made of only ONE cell
Unicellular organisms:
A living thing made of only ONE cell
uni- means “one”
Some are composed of many cells
Multicellular organisms
multi- means “many”

4. 2. Reproduce Two types of reproduction Sexual Reproduction
Asexual Reproduction
No egg and sperm involved
A piece of an organism becomes
a new organism
Sexual Reproduction
Egg and sperm unite

5. 3. Genetic code Living things contain genetic codes
DNA or RNA
Codes are passed from parent
to offspring
Can be used to
solve crimes.

6. 4. Growth and Development
All living things grow during at least part of their lives
Unicellular increase in size
Multicellular grow in size and change or develop

7. 5. Need Materials and Energy
METABOLISM
all of the chemical reactions within the body
Materials are broken down or built up
Energy is a requirement (used) and must be obtained (available)

8. 6. Respond to the Environment

9. 7. Homeostasis organisms keep internal conditions, constant.
Example: Temperature

10. 8. Evolution Organisms show relationship to other organisms
A group of organisms
change over time due to
survival of the fittest

11. A. Evolution D. genetic code G. Respond to stimulus
QUICK PRACTICE
The following are all examples of the characteristics of life.  Identify each one by matching a word from the top to a word phrase from the bottom. 
A. Evolution                D. genetic code             G. Respond to stimulus
B. Made of cells       E. Grow and develop    H. Homeostasis
C. Reproduce          F. Use/need energy
1. A person looks like their mother.
2. You eat a hamburger for lunch.
3. A baby gains 3 pounds in one week and begins to recognize voices.
4. A polar bear has white fur to blend in with the snow.
5. Your start to cry whenever you get a shot at the doctor’s office.
6. You begin to shiver because it is cold outside.
7. Red and white particles make up part of your blood.
8. A chick breaks out of an egg.