1. What is Biology?
The science of living organisms and life processes, including the study of structure, functioning, growth, origin, evolution and distribution of living organisms

2. Organism
An individual living thing

3. All organisms… Consist of one or more cells Reproduced based on DNA
Gain energy from their environment via metabolism
Use energy and matter from the environment to grow and develop
Maintain a separate internal environment to maintain homeostasis
Are the product of evolution

4. tissue
organ
organ system
molecule
cell
atom

5. community
ecosystem
multicelled
organism
population
the biosphere

6. The Organization of Life
Cell
Tissue
Organ
Organ System
Multicellular Organism
Population
Community
Ecosystem
Biosphere

7. The Scientific Method The main steps of the scientific method
Observation
The main steps of the scientific method
Question
Hypothesis
Prediction
Test does not support hypothesis; revise hypothesis or pose new one
Test supports hypothesis; make additional predictions and test them
Test:
Experiment or additional observation
Figure 1.3A

8. Deductive reasoning is used in testing hypotheses
If a hypothesis is correct, and we test it, then we can expect a particular outcome
Case study: flashlight failure
Figure 1.3B

10. Scientific Theory
An explanation of the cause or causes of a range of related phenomena.
Scientific theories, unlike common theories, have been rigorously tested but are still open to testing, revision, and tentative acceptance or rejection.