themes of life
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Study of Life
Themes & Concepts
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ThemesScience as a process of inquiryEvolutionEnergy transfer Continuity & ChangeRelationship of structure to functionRegulation
Interdependence in natureScience, technology & society
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Science as a process of inquiry
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Science as a process of inquiry
repeatable observations& testable hypothesis
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EvolutionCore theme of biology
Charles Darwin
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Natural selectionEvolutionaryadaptation is aproduct of natural
selection
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Nothing in biology makes senseexcept in the light of evolution.
Theodosius Dobzhansky
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Natural selectionEvolutionary adaptation is a product of natural selection
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Energy transfer Life is an open system
organisms continuously interactwith the enviro nment
stuff comes instuff goes outenergy is used
Entropy rules!
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Energy utilization
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Continuity & changeContinuity of life is based on heritableinformation in the form of DNA
DNA the genetic
material carriesbiological informationfrom 1 generationto the next
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Form follows functionStructure & function are correlated atall levels of biological organization
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RegulationRegulatory mechanisms ensure adynamic balance through feedback
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InterdependenceNo organism isan island standingalone
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Science, technology & societyScience & technology must function withinthe framework of society
ethics
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Umbrella concepts
Recurring principles & ideas
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Diversity & unityDual aspects of life on Earth
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Unity of life
What do organisms have in common?Why do similarities exist?
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Evolution explains diversity & unityUnity
evolutionary relationshipsconnected through a common ancestor
Diversitynatural selectionadaptations in
differentenvironments
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Properties of lifeorder reproduction growth &development
response
homeostasisevolutionaryada tation
energyutilization
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Levels of organization
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Each levelhas emergentproperties
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Cell is basic unit of lifeCell theory
developedwith early
microscopesprokaryoteseukaryotes
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Diversity of life
What differences are therebetween organisms?
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3 Domains of LifeBacteria, Archaea, Eukarya
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Organizing systemsMaking sense outof the diversityHierarchical scheme
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Why study themes of Biology?Biology is an ever expanding body of knowledge
too much to memorize it all
need to generalizecreate a framework upon which toorganize new knowledgethemes are fundamental inunderstanding the nature of livingorganisms
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Which science is growing thefastest in new knowledge?
BIOLOGY!!
Dr. Mary Claire King
Genomics& proteomicsprojects aredriving research
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Any Questions??