BIOL110s05-03 - BIOL 110 Principles of Biology Spring 2005...

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1 BIOL 110 : Principles of Biology Spring 2005 Lecture 3, M 1/24/05 Dr. Nathan Staples (Ph.D., UCSB 2002) http://www.smccd.net/accounts/staplesn/biol110/ • Don’t forget to read and prepare Pre-Lab writeups for Mon./Wed. Labs REVIEW: 1. Organization of life: cell, tissue, organ, organ system, multicelled organism, population, community, ecosystem, biosphere (9 levels) 2. Elements: CHNOPS 3. Molecules: protein, nucleic acid, carbohydrate, lipid 4. Characteristics of LIFE: (UNITY !!) 1. Reproduces 2. Hereditary material = DNA 3. Transforms energy = metabolism (building & breaking down materials) 4. Senses environment; controlled responses (Homeostasis) 5. Composed of Cells! TODAY: Diversity : Evolution, classification, scientific method
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2 II. **Life’s Diversity 1. Millions of living species 2. Millions more now extinct 3. Each species has some unique traits A. Scientific Names Two-part name (capitalized or underlined!!) – Humphead parrotfish is Scarus gibbus –F irstpart( Scarus ) is genus name • Capitalized – Second name designates a particular species within the genus
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3 B. Classification Systems • Organisms are grouped together based on descent from a shared ancestor • Three
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BIOL110s05-03 - BIOL 110 Principles of Biology Spring 2005...

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