Lecture 2 - BIOL104-04 Principles of Biology I Lecture#2...

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BIOL104-04 Principles of Biology I Lecture #2 August 25, 2010
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Hierarchical organization of living systems • Cellular level – Atoms – Molecules – Organelles – Cells
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Hierarchical organization of living systems • Organismal level – Tissues • Groups of similar cells – Organs • Composed of several different tissues – Organ systems
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Hierarchical organization of living systems • Population level • Ecosystem level • Biosphere
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What is Biology? • What makes something alive?
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Characteristics shared by living systems Cellular organization – Within a cell – Multi-cellular organisms Sensitivity Energy utilization Homeostasis Evolutionary adaptation
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The Nature of Science • Scientific method • Goal is to develop an increasingly accurate understanding of the world around us • Objective
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Scientific Method Descriptive – Ex: study of biodiversity Deductive reasoning – General principles to predict results
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Lecture 2 - BIOL104-04 Principles of Biology I Lecture#2...

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