1. KEY CONCEPT Science is a way of thinking, questioning, and gathering evidence.

2. Like all science, biology is a process of inquiry.
Scientists make careful and systematic observations.
Scientists record observations as data.
Scientists form a hypothesis as a possible answer to a     question.
Scientists test their hypotheses and analyze their data.

3. Biologists use experiments to test hypotheses.
Observational studies allow scientists to describe a phenomenon.

4. Experimentals allow scientists to determine what causes a phenomenon.

5. Experimental studies allow scientists to determine what causes a phenomenon.
Independent variables are manipulated.
Dependent variables are observed and measured.
Constants are conditions that are kept the same.

6. A theory explains a wide range of observations.
Theories explain a wide range of observations and experimental results.
A theory is supported by a wide range of scientific evidence.
Theories can change based on new evidence.

7. Essential Questions
What are the different elements of scientific inquiry?
What’s the difference between a hypothesis and a theory?

8. Biologist tools and Technology
Microscopes
Light microscopes
Magnifies objects 1500x’s their size

9. Biologist tools and technology
Electron Microscope
Beams magnify objects
Enlarges objects 100,000x’s their actual size
2 Types

10. Biologist tools and technology
Scanning Electron Microscope
Scans the surface of a specimen
Transmission Electron Microscope
Transmits electrons through a thin slice of a specimen