Introduction

Introduction - • Consumers Depend on energy stored in tissues of others • Decomposers Break down remains and wastes o Energy Flow • Sun •

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Introduction, Scientific Method Tuesday, January 13, 2009 1:12 PM 1. Biology o Scientific Study of life o Foundation for questions about life and the natural world 2. Scientific Method o Observation Need to be objective o Hypothesis Independent and dependent variables If/Then o Experimentation Single Variable Control Unmanipulated variable Record all variables 3. Theory 4. Concepts o Life requires energy Energy=capacity to do work Metabolism=cell reactions to acquire and use energy to grow, survive and reproduce We take energy from our food, and use it for energy in our bodies o Interdependencies among Organisms Producers Make their own food with external energy (keep matter and energy straight)
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Unformatted text preview: • Consumers Depend on energy stored in tissues of others • Decomposers Break down remains and wastes o Energy Flow • Sun • Organism to organism • Energy flows in 1 direction • Eventually, all energy flows back to the environment o Three Domain Classification • Bacteria Single Cell prokaryotes, most ancient lineage • Archaea Single cell prokaryotes, live in extreme conditions • Eukarya (Eukaryotes) With nucleus, single celled and multi celled protists, includes protists, plants, fungi, and animals 5. Levels o Ecosystem level o Community o Population o Organism o Organ system o Organ o Tissue o Cellular o Atom level...
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This note was uploaded on 11/05/2011 for the course BIOL 101 taught by Professor Hogan during the Fall '08 term at UNC.

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Introduction - • Consumers Depend on energy stored in tissues of others • Decomposers Break down remains and wastes o Energy Flow • Sun •

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