1. What is Biology?
Chapter 1

2. Characteristics of life outline
Biology:
Organisms:
Organization
cells -> ___ ___ ___
specialization
Reproduction
asexual
sexual
Growth
Development
Adjust
Stimulus/Response
Homeostasis
5. Adapt/Evolve

3. Biology:
study of life
Organisms:
living things

4. What determines life?
5 characteristics that all living things must have!

5. 1. Organization:
Made of cells!!
Cells tissues organs organ systems

6. Single-cell organisms have everything they need to be self-sufficient
Single-cell organisms have everything they need to be self-sufficient. In multicellular organisms, specialization increases until some cells do only certain things.

7. 2. Reproduction:
must occur for a species to survive

8. Species
·Organisms that look alike and can mate among themselves.

9. Same Species
Not Same Species

10. Reproduction can be: --Asexual: One parent makes identical offspring.
Sexual – two parents, offspring is hybrid of those parents

11. 3. Growth/ Development: Growth: Increase in size Development:
Changes from embryo to adult

12. 4. Adjust to Surroundings:
Stimulus: triggers a reaction
Response: the reaction to the stimulus.
Homeostasis:
Regulate internal environment
Ex. Sweating when hot, shivering when cold

13. 5. Adapt/ Evolve:
Adaptations are traits giving an organism an advantage in a certain external environment. Ex. Polar bears have thick fur,
fish have gills
Survival of the fittest!

14. Locomotion (Movement):
Not all organisms move (ex. Sponge is an animal that is sessile; mushroom is fungi that does not move from place to place.)