Introductions Name: Educational background: Reason for taking this course: Personal:

Tentative Schedule WeekMondayWednesdayDue this week: 1/5-1/7Course intro; Lecture: Chapter 1 Lecture: Chapter 2 Lab 1: Microscopy Syllabus quiz Pre-lab 1 Reading quiz: Chapter 1 1/12-1/14Lecture: Chapters 3 & 4Lecture: Chapter 5 Lab 2: Cell Diversity Pre-lab 2 Reading quiz: Chapters 2-5 1/19- 1/21Martin Luther King Day: Read ahead ! No Class Reading quiz: Chapters 6-7 1/26-1/28Lecture: Chapter 6 & 7 Lab 3: Diffusion and Osmosis Unit 1 Exam: Online! No class Pre-lab 3 Reading quiz: Chapters 6&7 2/2-2/4Exam Review Lecture: Chapters 8-9 Lecture: Chapter 10 Lab 4: Photosynthesis and Respiration Pre-lab 4 Reading quiz: Chapters /9-2/11Lecture: Chapter Lab quiz 1: Labs 1-4 Lecture: Chapter 13 Lab 5: Mitosis and Meiosis Unit 2 Review Pre-Lab 5 Lab 4 Report Reading quiz: Chapters /16-2/18Presidents’ Day HolidayLecture: Chapter 14 Unit 2 Exam Lab 6: DNA Investigator Pre-lab 6 Reading quiz: Chapters /23-2/25Lecture: Chapter 15-16Lecture: Chapter 17 Lab 7: Modeling Evolution Reading quiz: Chapters 1-16 Pre-lab 7 3/2-3/4Unit 3 Review Lecture, Chapter 18 Lab 8: Plant Diversity Unit 3 Exam Reading quiz: Chapters Pre-lab 8 3/9-3/11Lecture: Chapter 19Lab 9: Food Webs and Community DynamicsPre-lab 9 Reading quiz: Chapter 19 3/16-3/18Lecture: Chapter 20 Lab quiz 2: Labs 5-9 Reading quiz: Chapter 20 3/23-3/25Final exam; date and time TBA

Assignments Reading quiz: from the end of the chapters in the text book Pre-lab quizzes: simple Lab reports: from the hand outs Objective: Materials Procedure(s) Results (often a table) Questions to answer Errors

Grading Exams (3)24% 8% for each exam Final Exam15% Laboratory Assignments 30% Pre-labs: 8% Lab quizzes: 10% Lab reports: 12% Participation10% Including online discussions Assignments 21% Including online chapter quizzes Total100%

Grading Scale A/A % B+/B % B-/C % C/C % D+/D % below 50%

Questions?

The Scope of Life Chapter One

The Scope of Life Definitions Biology: the study of life and living things Living things: Order Regulation Growth and Development Energy processing Response to the environment Reproduction Evolution

Life at Many Levels: the Biosphere Biosphere: all living things on the earth Ecosystem: all of the living and non-living things in an area Community: all living organisms in an area Population: all of the individuals of a single species Organism: a single, individual living thing Organ systems and organs: groups of cells and tissues which coordinate to serve a particular system Tissues: groups of cells within an organ or with like function Cells: the smallest unit of life Organelles: functional components of life that serve as compartments Molecules: collections of atoms that are the building blocks of organelles and cells

Ecosystem All living and non-living things in an area A group of interacting objects and beings Two main processes Nutrient recycling Producers Consumers Decomposers Energy utilization Unidirectional flow Sunlight -  Heat Seas, deserts, ponds, fields

Cells and their DNA Lowest organizational level that can be considered alive Meets the criteria for “life” Occur singly (bacteria, amoeba) or in groups (organisms) Ability to divide is the basis for reproduction, repair, growth and development Common features: Membrane that regulates passage of molecules into or out of the cell DNA provides information for all processes: consists of genes Prokaryotes: single cells; no internal organelles Eukaryotes: internal subdivision into membrane bound organelles Nucleus, mitochondria,

Life in its Diverse Forms Abundance; 1.8 million species plants; vertebrates, 1 million insects Grouping species Three domains of life: archaea, bacteria and eukary Three kingdoms of eukarya: plants (producers), animals (consumers) and fungi (decomposers) Phylum, Order, Class, Genus, Species Unity and Diversity of life Genetic language

Evolution: Life’s Unifying Theme History of life Branching relationships Common ancestors Speciation

The Darwinian View Natural selection Overproduction and competition Individual variation Unequal reproductive success Artificial Selection Breeding plants for specific traits

The Process of Science Discovery Hypothesis driven science Scientific method Observation Question Hypothesis Prediction Experiment Result

Evolution Connection The environment presents selective pressures to communities and populations Antibiotic resistance Antibiotics are drugs that save lives They kill most, but not all bacteria A population of bacteria has natural variation in the susceptibility to the drug Survivors are better able to survive exposure to the drug, and multiply A larger proportion of the next generation of bacteria survives After several generations the population is largely RESISTANT Antibiotics are excreted into the environment Other bacterial species are exposed to and survive the drug They also evolve to show resistance

Biology and Society Trans fats Non-natural fats added to foods Hypothesis: patients who have experienced heart attacks will have more trans fats in their adipose tissue than healthy controls Test: sample the fat of 79 heart attack victims and 167 similar patients without a history of heart attack Result: 1.77 vs grams of trans fat per 100 grams of adipose tissue. DNA Evidence

Laboratory One