1. Biology Chapter 1
The Scope of Biology

2. Biology Explores Life (1.1)
Biosphere
all the inhabitable parts of the planet
Ecosystems
a community consisting of living and non living things
Organisms
individual living things
Cells
basic units of life that make up organisms
DNA and genes
inheritance info
Biosphere – includes most regions of land, water (rivers, oceans, lakes etc)

3. Biology Explores Diversity (1.2)
Over 1.5 million species (distinct form of life) discovered
3 domains:
1) archaea
2) bacteria
3) eukarya

4. Archaea & Bacteria
Unicellular
Simple (no nuclei: prokaryotic cells)

5. Eukarya All eukaryotic (have nuclei) Divided into 4 subgroups
protists, fungi, plants and animals
Some unicellular (protists & fungi)
Some multicellular (protists, fungi, plants & animals)

6. Ch 2: The Science of Biology

7. (2.1)

8. Data Two Types of Data Quantitative data Qualitative data
The recorded info
Ex: A plant growth chart
Two Types of Data
Quantitative data
Measurements, #’s
Qualitative data
Descriptions, observations

9. Observations vs Inference
Use of senses to gain information
Inference
Logical conclusion based on __________
observation

10. (2.2)

11. Hypothesis and Scientific Method
One example of the Scientific Method:
Using Science
attempts to explain a question using the scientific method
One key element is always there…
The HYPOTHESIS

12. Scientific Method: Forming and Testing a Hypothesis
Testable suggestion to answer a scientific question
Can it be tested?
Falsifiable – something that could prove a hypothesis is false
A wrong hypothesis is NOT a failure

13. Eg: flashlight not working
Pg. 31
Eg: flashlight not working

14. Also needed in Science Variable: Controlled Experiment:
a condition that can differ within an experiment
Controlled Experiment:
testing only ONE variable at a time
that variable is compared to the “control”

15. (2.3)

16. Evidence in Science Evidence “ Biology Teacher REALLY an Alien!”
Collected body of data from observations and experiments
Must be repeatable
“ Biology Teacher REALLY an Alien!”
Can this be tested?

17. The Limitation of Science
Need repeatable observations and testable hypothesizes
Ex: supernatural phenomenon
“A way of knowing”
Music you like
Right from wrong

18. Theories in Science Theory
Well tested explanation, many, many, many observations
Can be changed based on new info
A hypothesis needs a lot of support to become a theory
Broader than a hypothesis

19. Science, Technology and Society
Society asks questions
Ethical?
Who?
Why?
Goal of Science
Understand through observation and testing
Goal of Technology
Apply scientific understanding

20. Permission Statement:
Restricted to the use of New Berlin Eisenhower High School Students, Faculty and Staff.
Contact the Science Department for usage permissions.
© 2009