Chapter 1 Lecture and Reading Note taking Template Fill in this outline in lecture then use your textbook to add to it Notes from just the lecture are not enough to do well in this class 1 What general announcements and follow ups are there Syllabus quiz due August 30th Homework Chapter 1 and the Lab Content 2 When does SI begin Where is it Monday and Wednesday September 4th Dairy Science 100 5 6pm 3 What is the study of biology Does it involve other disciplines The study of life complex chemical systems constrained by the properties of chemistry and physics physics mechanics Science is interdisciplinary combing multiple fields 4 What makes something alive What are the 7 characteristics of life Growth Reproduction Stimulus Reactions Response to internal environment Homeostasis Order Complexity Adaptation Cells fundamental unit of life 5 What are the three broad levels of the hierarchy of life What are the 14 levels of hierarchy Be able to define each level and identify examples of each Why is this important Three broad levels of Hierarchy Cellular Level Organismal Level Populational Level 14 Levels of Hierarchy Atoms Molecules Macromolecules Organelle Cell Tissue Organ Organ System Organism Population Species Community Ecosystem Biosphere KNOW THESE IN ORDER 6 What is meant by emergent properties Why is this important Interaction of component not deduced by looking at individual parts 7 Define science What are distinguishing characteristics of science What types of reasoning are used Way of organizing ideas logic system fields that support it natural world Science aims to understand the natural world through observation descriptive and reasoning critical thinking 8 Describe the process of science Scientists use systematic approach to gain understanding of the natural world Observation Hypothesis formation Prediction Experimentation Conclusion 9 What is a hypothesis A control A variable Hypothesis a suggested explanation that accounts for those observations Control variable that s left unaltered Variable processes that are influenced by many factors 10 What are the two approaches to studying biology and how do they differ 11 Why do biologists construct models 12 What is the scientific definition of a theory List several scientific theories Is a body of interconnected concepts Supported by much experimental evidence and scientific reasoning Expresses ideas of which we are most certain 13 In conversation how is the word theory used Implies a lack of knowledge or a guess 14 How is a hypothesis different from a theory Chapter 1 Lecture and Reading Note taking Template A hypothesis is a suggested explanation that accounts for those observations A theory is a proposed explanation for some natural phenomenon often based on some general principle It is also the body of reasoning and experimental evidence that explains the facts in some area of study 15 In what ways does Darwin s theory of evolution show the process of science Was not the first to propose evolution Living things have changed over time Contribution was a mechanism Natural Selection Saw characteristics of similar species varied from places to places Galapagos Finches 14 related species differ only slightly Descent with modification or evolution Saw that although every organism has the potential to produce more offspring only a limited number survive and reproduce Components of natural selection 1 Variation 2 Differential reproduction 3 Heredity Comparative anatomy homologous same evolutionary origin but now differ in structure and function Analogous Structures such structures are similar in function but not in structure Phylogenetic trees based on tracing origin of particular nucleotide changes to reconstruct an evolutionary history Compare genomes or proteins of different organisms 16 List and then explain each of the seven unifying themes of biology 1 The Cell Theory All living things are made of cells and cells come from other cells 2 Molecular Basis of Heredity The passing down of traits DNA Genome 3 Structure and function study the structure of molecules and macromolecular complexes to learn about their function 4 Diversity of Life life from the same origin event changed over time a Three domains of life 1 Bacteria 2 Archaea 3 Eukarya 5 Evolutionary conservation explains the unity of life the retention of these conserved characteristics in a long line of descent usually reflects that they have fundamental role in biology of the organism one not easily changed once adopted 6 Cells are information processing systems highly complex nanomachines that process information 7 Living systems exist in nonequilibrium state open systems that function far from thermodynamic equilibrium