intro to biology unit 1 (chapter 1) the basis of life part 1
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Intro to BiologyIntro to BiologyUnit 1 (Chapter 1) Unit 1 (Chapter 1) The Basis of LifeThe Basis of LifePart 1Part 1
Vocabulary IntroVocabulary Intro
Section 1.1Section 1.1
BiosphereBiosphere
OrganismsOrganisms
Spontaneous generationSpontaneous generation
BiogenesisBiogenesis
CellCell
TissuesTissues
OrgansOrgans
Section 1.1 Big IdeasSection 1.1 Big Ideas
Compare different theories of the origin of lifeCompare different theories of the origin of life
Summarize the properties of lifeSummarize the properties of life
Compare different Compare different theories of the origin of theories of the origin of
lifelife VitalismVitalism
Popular 2300 hundred years agoPopular 2300 hundred years ago Living things exist because they have been Living things exist because they have been
filled with special forces (ethers)filled with special forces (ethers) It was the well accepted belief for 2000 yearsIt was the well accepted belief for 2000 years
Spontaneous GenerationSpontaneous Generation The process of life beginning when ethers enter The process of life beginning when ethers enter
nonliving thingsnonliving things Ex. The belief that rotting meat actually Ex. The belief that rotting meat actually
produced maggotsproduced maggots
Compare different Compare different theories of the origin of theories of the origin of
lifelife BiogenesisBiogenesis
Francesco Redi – Maggot/meat experimentFrancesco Redi – Maggot/meat experiment click here for video ““bio” means “life”, “genesis” means bio” means “life”, “genesis” means
“beginning”“beginning” Scientific method at workScientific method at work
What was the control?What was the control? What was the independent variable?What was the independent variable? What was the dependent variable?What was the dependent variable? Conclusion: maggots are indeed the product of Conclusion: maggots are indeed the product of
fliesflies
Compare different Compare different theories of the origin of theories of the origin of
lifelife Changes in the theories in all science often Changes in the theories in all science often
happen as a result of an increase of happen as a result of an increase of technologytechnology Ex: Telescopes and MicroscopesEx: Telescopes and Microscopes
Both allowed us to see things we had not been Both allowed us to see things we had not been able to prior to their inventionable to prior to their invention
Human discoveries of the time:Human discoveries of the time: The heart is a mechanical pump; not just an organ The heart is a mechanical pump; not just an organ
of emotionof emotion
These new methods for discovery allowed These new methods for discovery allowed scientists to determine “the properties of life”scientists to determine “the properties of life”
Summarize the Summarize the properties of lifeproperties of life
Similarities between living and nonliving thingsSimilarities between living and nonliving things Both are composed of the elements (the materials Both are composed of the elements (the materials
present on Earth)present on Earth) They all obey the same laws of natureThey all obey the same laws of nature
Characteristics that make living things different:Characteristics that make living things different: OrganizationOrganization EnergyEnergy Growth/developmentGrowth/development ReproductionReproduction Response and adaptationResponse and adaptation
Summarize Summarize the properties the properties
of lifeof life
Summarize Summarize the properties the properties
of lifeof life
Summarize Summarize the properties the properties
of lifeof life
Basic StructureBasic Structure
Cells = fundamental units of life that exhibit Cells = fundamental units of life that exhibit all of the properties of living thingsall of the properties of living things Cells contain specialized compartments that do Cells contain specialized compartments that do
jobsjobs
Tissues are groupings of cells that work Tissues are groupings of cells that work together to perform specific functionstogether to perform specific functions
Organs = groupings of tissues that function Organs = groupings of tissues that function together for a specific purposetogether for a specific purpose
Organ system – a group of organsOrgan system – a group of organs
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