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Unformatted text preview: 1-15-08 Chapter 1 A View of Life 1. Zoology the study of animals 2. Unifying themes a. Hierarchy of Organization characteristic of life i. Biological organization based on hierarchy of structural levels ii. Atom<molecule<organelle<cell<tissue<organ<organ system<organism<population<community<ecosystem<biome<bio sphere b. Acquire materials and energy animals require the input of energy to maintain organization c. Respond to Environment abiotic + biotic = ecosystem d. Reproduction and Development i. produce another individual of the same kind ii. progressive change throughout an organism's life iii. Genes 1. Common genetic blueprint (DNA) 2. biological instruction for organism's structure e. Evolution populations of organisms change over time i. Alfred Wallace inspired Darwin and contributed to theory ii. As a result of descent with modification iii. Proposed natural selection, which differed from previous ideas 3. Classification of Living Organisms a. Taxonomy naming and classifications of species b. Classification Hierarchy i. (most to least general) 1. species (humans, wolves...) < genus < family < order (25 orders of insects) < class < phylum (12) < kingdom < domain (3) c. Binomial Nomenclature i. 2 name naming system ii. Genus species 4. Scientific Method a. What is science? i. It is concerned with observations and tests and requires a testable hypothesis ii. Objective iii. Can only prove something to be false, not true b. Scientific Method i. All science begins with observations or accumulated data ii. Hypothesis plausible explanation / educated guess iii. Experimentation test hypothesis (reproduce results) iv. Conclusion v. Scientific Theory model / conceptual framework ...
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- Spring '08