1. Chapter 1
The Science of Biology

2. Science = organized way of gathering and analyzing evidence about the natural world
Goals
- explain events of nature

3. Scientific Method = a logical, organized method of study
Observe a problem. Ask a question.
Collect background info (data)
- make an inference = logical interpretation based on prior knowledge

4. 3) Form a hypothesis
= a statement that explains observations and can be tested

5. 4) Experiment to test the hypothesis
- 2 variables :
Independent variable = Variable that you control
Dependent variable = variable that changes based on independent variable

6. 1. experimental group (variable) 2. control group (no variable)
- use 2 identical groups except for one factor = independent variable (what you’re testing)
2 groups 
1. experimental group (variable)
2. control group (no variable)

7. 5) Record and analyze data
- Quantitative – numbers
- Qualitative - descriptive
6) Draw conclusions – based on data to support, refute, or revise hypothesis

9. 7) Report findings – research methods, results, conclusions
After many tests, develop a theory = a unifying explanation for a broad range of observations.