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orbitals

Unit 1

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Biology
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orbitals

? CHAPTER 1: AN INTRODUCTION TO BIOLOGY ? What is Biology? ? The scientific study of life. ? What does it mean to be alive? ? Some Characteristics of Life 1. Cells and organization 2. Metabolism (energy use) 3. Homeostasis 4. Reproduction, growth and development 5. Evolution ? Levels of Organization 1. Atoms 2. Molecules and macromolecules 3. Organelles 4. Cells 5. Tissues 6. Organs 7. Organ Systems 8. Organism 9. Population 10. Community 11. Ecosystem 12. Biosphere ? Unity and Diversity ? Evolution ? changes in the genetic material of species over time ? Vertical and horizontal evolution ? Classification - Taxonomy ? Grouping of species based on common ancestry ? 3 Domains (broadest categories)
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