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Chapter One: Exploring Life 1.1) Biologists explore life from the microscopic to the global scale 1.2) Biological systems are much more than the sum of their parts 1.3) Biologists explore life across its great diversity of species AP Biology, Dr. Senegar-Mitchell, Per 2 Ben Calabrese, Charlie Fornaca, Josh Fox, Emily McLaughlin Welcome to the Team! Meet the coaches… Summarizing Coach: J. Fox Clarifying Coach: E. McLaughlin Predicting Coach: B. Calabrese Questioning Coach: C. Fornaca Get the Basics! Hierarchy of Biological Organization 12 levels starting from Biosphere to Atom. Cells are the smallest level that can perform all activities for life. 9th level Reductionism Species are classified in Taxonomy Three Domains: Bacteria, Archaea, and Eukarya Natural Selection: survival of the fittest Hypothesis so they can make a prediction Test Hypothesis to see if the prediction is correct Theory is made up of hypothesises. Science is a very social subject Do you Get it? Energy Conversion: Where’s the batteries? • Everything works together, living organisms live and feed off each other’s energy. Only Two Cell Types: Eukaryotic & Prokaryotic Negative & Positive Feedback: Simple Terms • • • Both: Forms of regulation Negative: Slows/ Ends a process Positive: Speeds/ Continues a process Enzymes vs. Catalysts: Say whaa? • • • A Catalyst is… a chemical agent that changes the rate of a reaction. An Enzyme is… a protein acting as a catalyst. An enzyme can act as a catalyst but a catalyst can not be an enzyme [like squares and rectangles] You Should Care! We will study Eukaryotic and Prokaryotic Cells in chapter 6, which involves the study of cells and their functions in living organisms. We will study feedback in chapter 40, when we study how the body regulates its own temperature using evaporative heat loss. Know Your Stuff? How would a tree make use of all the non- living factors in its environment? How does that tree interact with other living organisms in its environment? How does the flow of sunlight affect consumer organisms? Give an example of the process of cycling nutrients. What is the basis for all reproduction and the growth and repair of multicellual organisms? Energy Flow through an Ecosystem [Diagram #1] Classifying Life [Diagram #2] The End. Thank You!
