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Chapter 1 Notes

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by: Michela Spicer

Chapter 1 Notes BSC 108

Michela Spicer
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About this Document

These notes cover what was explained in lecture on August 19th, and what the textbook explains regarding chapter 1.
Intro to Biology Non-Maj
Dr. Yates
Class Notes




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This 3 page Class Notes was uploaded by Michela Spicer on Tuesday August 30, 2016. The Class Notes belongs to BSC 108 at University of Alabama - Tuscaloosa taught by Dr. Yates in Fall 2016. Since its upload, it has received 122 views. For similar materials see Intro to Biology Non-Maj in Biology at University of Alabama - Tuscaloosa.


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Date Created: 08/30/16
Life  Living: metabolism, homeostasis, reproduction, respiration oThey have order o They regulate themselves- called homeostasis: “maintaining a steady state” o They grow and develop o They use energy o They respond to the environment o They reproduce o Populations evolve  Non-living: non-adapting Theme 1: The scope of life and emergent properties  Life consists of a vertical hierarchy oMolecules  Biosphere Theme 2: Organisms exchange matter and energy within ecosystems  Every organism interacts with its environment oBoth are affected  Ex: Plants use CO2 to make food  All oxygen in the atmosphere comes from photosynthesis oNutrients are recycled oEnergy flows from sunlight to producers to consumers  Energy exits as heat Theme 3: Cells are an organism’s basic unit  Cells are the lowest level of organization that can perform all the activities of life  All cells oAre enclosed by a membrane oUse DNA as the recipe for the process of life o2 kinds of cells  Prokaryotic and Eukaryotic Theme 4: The continuity of life is based on the information in DNA  Chromosomes contain most of a cell’s genetic material in the form of DNA  DNA is the substance of genes  Genes are the units of inheritance that transmit information from parents to offspring Theme 5: Diversity is the hallmark of life and the diverse forms of life fit their functions  There are three main groups of life oCalled domains  Eukarya oKingdom Plantae oKingdom Fungi oKingdom Animalia oProtists (multiple kingdoms)  Bacteria  Archae Theme 6: Evolution  Heritable changes in populations over generations  Biology’s core theme oThe scientific explanation for both…  The unity of life  The diversity of life Science  The word science is derived from a Latin verb meaning “to know”  It is both… oA way of knowing oA body of knowledge Scientists use two main forms of inquiry 1. Discovery science oDescribes natural structures and processes 2. Hypothesis based science oHypothesis: an idea that can be tested oFailure to falsify a hypothesis does not “prove” it  Ex: you replace your flashlight bulb  It now works  Supports the hypothesis that your bulb was burnt out  But does not prove it  Perhaps the first bulb was inserted incorrectly oStep 1: Observe and generalize oStep 2: Formulate a hypothesis oStep 3: Make a testable prediction oStep 4: Experiment or observe o Step 5: Modify hypothesis as necessary and repeat steps 3&4 OR publish hypothesis Science is collaborative  Scientists are not super heroes who single handedly prove hypotheses  Today, most research is accomplished through teamwork


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