Science as a Way of Learning

1
Chapter 1

• Science as a Way of Learning

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Targets

• Describe why it is important to acquire a basic
  knowledge of biology
• Explain the scientific method
• Differentiate between theory hypothesis
• Define life the hierarchy of living things
• Explain the role of evolution as a unifying theme
  of biology

3
Science Today

• Cloning
• Global warming
• DNA
• Botox
• AIDS
• Heart disease
• Why is it so important to be science literate?

4
Science Explained

• Science body of knowledge about the natural
  world
• Theories general set of principles, supported
  by evidence, that explains some aspect of nature
• Example Big Bang Theory

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Scientific Method

• Observation
• Problem
• Hypothesis
• Has to be testable
• Experiment
• Experimental variable factor that YOU change
• Controlled variable factor that remains the
  SAME
• Results
• Conclusion

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Life Functions

• Energy use
• Respond to environment
• Maintain homeostasis
• Possess inherited information

• Ability to reproduce
• Composed of one or more cells
• Evolved from other living things
• High organized

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Levels of Organization

• Electron
• Atom
• Molecule
• Organelle
• Cell
• Tissue

• Organ
• Organ system
• Organism
• Population
• Community
• Ecosystem
• biosphere

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Evolution Unifying Theme

• Evolution gradual modification of populations
  of living things over time, sometimes resulting
  in new species
• Every living thing has evolved from somewhere
• Evolved for survival (butterflies snakes)