Zoology Notes - CHAPTER 1 BIOLOGICAL PRINCIPLES AND THE...

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1 CHAPTER 1 BIOLOGICAL PRINCIPLES AND THE SCIENCE OF ZOOLOGY
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2 A. Introduction Science: Observation, description, identification, experimental investigation, and theoretical explanation of natural phenomena
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3 Biology: Scientific study of all life Zoology: Scientific study of animal life
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4 B. The Nature of Science Science is guided by natural law. 1.Explained by reference to natural law. 2.Testable against the observable (empirical) world. 3.Conclusions are tentative. 4.Science is falsifiable.
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5 C. Characteristics of Living Systems 1. Chemical Uniqueness Macromolecules in organisms are far more complex than molecules in nonliving matter.
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6 2. Complexity and Hierarchical Organization Macromolecules LIFE Cells Ð Ð Species Organism Population Ð Ð
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7 3. Reproduction Organisms produce new organisms sexually or asexually. Necessary for a lineage to survive.
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4. Genetic Program In living things, DNA is the molecule of inheritance. DNA contains the instructions
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Zoology Notes - CHAPTER 1 BIOLOGICAL PRINCIPLES AND THE...

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