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Welcome to General Biology BI101–Spring 2006 Course Introduction Instructor: Lonnie Guralnick Office: E-Mail: Phone: 104b Natural Sciences [email protected] 838 - 8136 (x8-8136) Office Hours: M 1 pm T 9 am Th 9-11 am F 2 pm Course Introduction Lectures: • MWF 11:00 - 11:50 am 103 NS Required Text: • Biology - Life on Earth (Audesirk2 & Byers - 7th Ed.) • Laboratory Manual (BI 101) Course Introduction Grading: Exam 1 Exam 2 Exam 3 Final Laboratory Testing Format: 100 100 100 150 150 500 Multiple Choice True/False Matching (w/ Diagrams) Fill-in-the-blank / Short Answer Grading Scale (approximate): 100 - 90% = A 89 - 80% = B 79 - 65% = C 64 - 55% = D < 55% = F Course Introduction Web Site: • http://www.wou.edu/~guralnl • Course Button: BI101 What is the content of BI 101? Unit 6: Ecology Chapters 39-42 • Population Ecology • Communities and Ecosystems • Biomes Unit 3: Diversity of Life Chapters 17-23 • History of life • Systematics • Diversity of life: Bacteria, fungi, plants and animals Unit 3: Evolution Chapters 14-16 • Microevolution • Origin of species • Macroevolution Course Introduction How to get the most out of BI 101: 1) Come to class 2) Read the book before lecture 3) Review study questions. 4) Do your best in lab (It’s 25% of your grade!) 5) Seek understanding of concepts. Ask questions! • talk to your professor • visit the tutoring center • start a study group 6) Stay Healthy! Chapter 1: Introduction to Life on Earth What is Life? What are the Characteristics of Living Things? 1) Living things are complex and organized (Figure 1.2) Chapter 1: Introduction to Life on Earth What is Life? What are the Characteristics of Living Things? 1) Living things are complex and organized 2) Living things need nutrients and energy • Nutrients = Environment (e.g. soil) • Energy = Sun (Direct or Indirect) 3) Living things maintain homeostasis 4) Living things grow 5) Living things respond to stimuli (e.g. pain) 6) Living things reproduce (DNA = blueprints) 7) Living things evolve (Natural Selection) Chapter 1: Introduction to Life on Earth How Do Scientists Categorize the Diversity of Life? Current System of Classification (largest to smallest): • Bacteria • Archaea Domain Prokaryotes (no nucleus) • Eukarya Eukaryotes (true nucleus) Eukarya Scientific Name: Animalia Kingdom Genus species Chordata Phylum Reptilia Class Squamata Order Colubridae Family Thamnophis Genus Sirtalis Species Chapter 1: Introduction to Life on Earth What Does the Science of Biology Encompass? Scientific principles underlie all scientific inquiry: 1) All events can be traced to natural causes that can be comprehended 2) Laws of nature (physics) hold in all time and space 3) People perceive natural events in similar ways Scientific method is the basis of scientific inquiry: 1) 2) 3) 4) Observation Hypothesis Experiment Conclusion Maggots appear on meat Flies produce maggots Leave meat uncovered / cover meat Flies source of maggots What Does the Science of Biology Encompass? Science is a human endeavor: • Chance events • Errors • “Gut” instincts Scientific Reasoning: • Inductive • Deductive Chapter 1: Introduction to Life on Earth What Does the Science of Biology Encompass? Scientific Theories have been thoroughly tested: • Not educated guesses • May be modified • More general and reliable • General explanation of important natural phenomena • ie: atomic theory, cell theory, •Can be modified with evidence Chapter 1: Introduction to Life on Earth Evolution: The Unifying Theory of Biology Three natural processes underlie evolution: 1) Genetic variation exists among members of a population 2) Such variation is inherited to the next generation 3) Natural Selection: The survival and enhanced reproduction of members with favorable variations. 1 2 3 Birds like red frogs Dr. Guralnick