1. Unit 1: Biology a view of Life Pgs 1-19

2. Student Outcomes Distinguish between the living and nonliving.
Describe the levels of biological organization from smallest to largest.
Compare and contrast the 3 domains of life.

3. Student Outcomes
Give a brief overview of the relationship between evolution and biology.
Describe the flow of energy through ecosystems.
Understand and Perform steps of the scientific method.

4. Key Terms Prokaryote Eukaryote Metabolism
Homeostasis Stimulus Response
Adaptation Biosphere Taxonomy
Theory Evolution Hypothesis
Classification Heterotroph Autotroph
Binomial Nomenclature Mutation
Natural Selection

5. Science In Latin means to know or to discover
Based on Direct Observations and a Testable Hypothesis
Measureable
Not a ‘belief’
Astrology and whitchcraft, ghosts, religion are not science

6. Living vs Nonliving Organisms….
Are composed of cells
Grow and Develop
Perform and regulate chemical activities
Respond to stimuli
Reproduce
Evolve and adapt to the environment
Growth occurs lifelong in some organisms or stops at adulthood in others (animals)
Development includes all the changes that take place.
Chemical activities are known as metabolism. Must be regulated to maintain homeostasis.

7. Levels of Organization (smallest to largest)
Atoms - _____________
Molecules - _____________
Cells - _______________
Tissues - _____________
Organs - ______________
Organ Systems - _____________
Organism - ________________

8. Levels of Organization (smallest to largest)
Population
Community
Ecosystem
Biosphere

9. Systematics (study of diversity and relationships of organisms)
* Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species

10. Domains
Eubacteria
Archaea
Eukarya - (Eukaryotes)

11. Kingdoms Eubacteria - bacteria Archaea - Archaebacteria
Eukarya - Animalia, Fungi, Plantae, Protista

12. Major Themes Evolution - Populations will change ‘evolve’ over time
Information Transfer-cells must communicate with each other and from parent to offspring.
Energy For Life - continuous supply of energy

13. Species evolve
Natural selection drives the evolution of organisms (finches, pests, superbugs)
Darwin’s Origin of Species in 1859
Variations by mutations
New discoveries in genetics have given support to the evolution theory

14. Energy Pyramid
Producers
Consumers
Decomposers

15. Energy Pyramid Producers - Autotrophs - Photosynthesis
Consumers/Decomposers - Heterotrophs
Primary consumers - Herbivores
Secondary consumers - carnivores
Teritiary consumers - carnivores
(What would a venus fly trap be???)

16. Energy Pyramid What supplies the initial energy?
Where is energy converted?
When/Where is energy lost?
What happens when an organisms dies?

17. Scientific Method Problem/Question Research Hypothesis Experiment
Data Gathering and Analyzing
Conclusion
This is the formal way of doing research/problem solving. However, many discoveries are made by ‘accident’ Scientists working on other ‘problems’ and make a discovery on something else. EX: nutrasweet.

18. Scientific Method cont.
After experiment is repeated, then publish findings and limitations.
Experiment and findings must be supported by others-Peer Review

19. Hypothesis
Two Types
Null Hypothesis
Directional Hypothesis

20. Hypotheses (see next slide first)
Effect music has on the growth of plants.
Effect music has on a person’s ability to retain information while studying.
Effect music has on 17 year olds ability to retain information while studying.
Effect music has on 17 year old males ability to retain information while studying.

21. Experiment Must include a control for comparison
Must be appropriate sample size
Must be repeatable
Two types of variables:
IV-independent variable
DV-dependent variable

22. Avoiding bias
Blind study
Double blind study

23. Data Must be recorded unbiased
Use standard deviation to determine if data from the variable is statistically different.
Give examples of polls and such ( % points)

24. Conclusion Not important if hypothesis is correct or not.
Information learned about the question is what is important!!!

25. Science Theories
The longer a theory exists in time and/or the more effort to prove it false the stronger the theory becomes.