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??