characteristics of living things. biology- –bio-life –ology-study of biology: 1)organisms...
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Characteristics of Living Characteristics of Living ThingsThings
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Biology- Biology- – Bio-lifeBio-life– ology-study ofology-study of
Biology:Biology:1)1) OrganismsOrganisms2)2) Interactions with environment & other Interactions with environment & other
organismsorganisms
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ORGANISMSORGANISMS
ExhibitExhibit all all the characteristics of life! the characteristics of life!
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#1:Living things are #1:Living things are diversediverse and are and are made of made of cells.cells.
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Hierarchy of Living Things:Hierarchy of Living Things:
CellCellTissueTissueOrganOrganOrgan SystemOrgan SystemOrganismOrganism
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#2: #2: ReproduceReproduce
Make more of the organismMake more of the organism
SpeciesSpecies: group of organisms that can : group of organisms that can interbreedinterbreed and produce and produce fertile fertile offspringoffspring
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Two Types of Reproduction:Two Types of Reproduction:
AsexualAsexual– - identical organisms- identical organisms– - clones- clones– Binary Fission- bacteria divide into two Binary Fission- bacteria divide into two – CloningCloning– Regeneration- grows 2 individuals from oneRegeneration- grows 2 individuals from one
*example: planarian*example: planarian
Flatworm regeneration: Two-headed Flatworm regeneration: Two-headed planariaplanaria
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Sexual ReproductionSexual Reproduction
– Individuals are different due to variation created Individuals are different due to variation created from mixing DNA from two individualsfrom mixing DNA from two individuals
– Transfer of DNA:Transfer of DNA:– Sperm/egg (fertilizationSperm/egg (fertilization
– Conjugation- bacteria transfers DNA through a Conjugation- bacteria transfers DNA through a tunnel. NO SPERM OR EGG NEEDED!tunnel. NO SPERM OR EGG NEEDED!
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Grow & DevelopGrow & Develop
Growth- tree getting taller
Development: Metamorphosis of caterpillar to a butterfly
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#4: #4: RespondRespond to a to a StimulusStimulus
A. Stimulus- anything A. Stimulus- anything that can cause a that can cause a responseresponse
B. Examples:B. Examples:
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#5: Homeostasis#5: Homeostasis
Regulation of internal Regulation of internal balancesbalances
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Stability and HomeostasisStability and Homeostasis
Temperature, water content, chemical content, Temperature, water content, chemical content, etc.etc.
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#6: Energy Use#6: Energy Use
Metabolism- all the chemical reactions in Metabolism- all the chemical reactions in the bodythe body
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#7: Adapt & Evolve#7: Adapt & Evolve
Adaptation: any Adaptation: any structurestructure, , behaviorbehavior or or mechanism that enables an organism to mechanism that enables an organism to respondrespond to a stimulus and to a stimulus and evolveevolve
EvolveEvolve: Accumulation : Accumulation of adaptations over of adaptations over timetime