1. What is Biology?

2. Biology is the Study of Life
Biologist study the interactions of life.
Entomologist
Anthropologist
Ornithologist
Botanist
Zoologist

3. How does science define life?
There are 8 different Characteristics that an organism must have to be considered.
What might these be?
Share with the person next to you and come up with 8 characteristics of all living things.

4. Cells/Organization
Living things are highly organized: they are all composed of tiny living units called cells.
Cells are the smallest units that are considered alive.
Some organisms consist of only a single cell, others have trillions.
Multicellular
Unicellular
Image from:

5. Obtain and use energy
Living things take in energy to grow, develop and reproduce.
The chemical reactions that build up or break down materials is called metabolism.
Image from

6. Reproduction
Individual organisms die, but the species continues because of reproduction.
Reproduction without genetic contribution from two parents is called asexual.
Sexual reproduction produces offspring with genetic material from both parents.
Imae from
Image from

7. Growth and Development
Living things grow over their lifetimes.
Single- celled organisms increase their volume and multicellular organisms add to the number of cells in their body.
Development example:
seed to apple tree
Image from

8. Response to the Environment
When presented with the proper stimulus, a living organism will respond.
Example: chemical produced by a plant to keep caterpillars away.
Image from

9. Living things evolve
Groups of organisms will evolve or change over time.
Evidence of these changes can be found in living things and fossils.
Darwin and Natural Selection provide the evidence
satorismiles.com/.../

10. Maintain stable internal environment
Organism must keep their internal environment stable even when the external environment changes.
Maintaining an organisms internal environment is referred to as homeostasis.
Ex: humans internal temperature

11. Universal genetic code
All information needed to live and grow is stored in a genetic code known as DNA.
Information is passed from parent to offspring.

12. Any Questions. Let’s review…. What are the characteristics of life
Any Questions? Let’s review….What are the characteristics of life? Write down the characteristics we talked about today

13. Do scientists consider this living?
Consider all 8 characteristics of life
Do you think a virus is living or not and defend your answer?

14. Unity and diversity of life
How is the unity of life, the fact that all living things share the same characteristics explained?

16. Let’s go outside!
You will come back inside and pair up with another person.
Compare your observations. Group your specimens together and indicate why you grouped them that way.
Make a list of similarities and differences.
Part 1- Collect and/or observe 5 specimens from outside.
They can be anything as long as we are not damaging the ecosystem
Write down observations during your time outside.
You have 10 minutes

17. Unity: due to common ancestry Diversity: having different forms through adaptations in response to different environments

18. Diversity
Diversity of organisms has occurred through adaptations to different environments.
Which characteristic of life does this connect to?

19. Taxonomy
Organization of organisms that have similar structures and function.
Why should we classify organaisms?

20. Six Kingdoms and 3 Domains

21. Classification Carl Linneaus – developed modern taxonomy
Organized organisms based on common structures which reflects evolutionary relationships
Developed two part naming system called Binomial Nomeclature