Campbell_01 - Chapter 1 TenThemesinStudyofLife Biology...

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    Chapter 1 Ten Themes in Study of Life
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    Biology Study of Life Quest for the nature of Life, answering  questions, and asking new questions What is Life? Characteristics of living things
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    Properties of Living Things 1. Order – all other  characteristics arise  due to complexity of  life
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    Properties of Life 2. Reproduction – life  comes from life
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    Properties of Life 3. Growth and  Development –  heritable programs in  DNA direct growth 4. Energy utilization –  organisms take in  energy and transform  it to do work
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    Properties of Life 5. Respond to Stimuli  – organisms react to  changes in  environment 6. Homeostasis –  maintaining the  complexity of life
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    Properties of Life 7. Evolutionary  Adaptation –  populations (key  term) changes to suit  environment
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    Hierarchy of Organization Each level builds on levels below it Atoms – building blocks of all matter Molecules –  Organelles – parts of a cell Cells – smallest unit of life Tissues – groups of cells acting as one Organs – groups of tissues acting as one Organ systems Organism
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    Hierarchy beyond Organism Population – group of same organisms in  a defined area Community – group of different species  in same area Ecosystem – non-living and living  interactions 2 major processes – cycling of nutrients and  energy conversion Biosphere – all ecosystems together
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    Closer look at the Cell Smallest thing that  can do processes  required for life Is a virus a living  thing?
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    Cell’s Heritable Information All cells contain  chromosomes made  up of DNA Substance of genes
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Campbell_01 - Chapter 1 TenThemesinStudyofLife Biology...

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