B31 ppt the history of life ch 14

Important Factors in Choosing Papaya Important Factors in Choosing Papaya (to be narrowed down to 10)(to be narrowed down to 10)

Demographics Demographics place where growingplace where growing

origin of plant- commercial, nursery, origin of plant- commercial, nursery, friend, volunteer, etc)friend, volunteer, etc)

height of plantheight of plantgarden or wildgarden or wild

intention of plant (to eat, ornamental, use intention of plant (to eat, ornamental, use of plant – eating, giving away, selling?, of plant – eating, giving away, selling?,

Condition of the plant (diseased Condition of the plant (diseased (describe)(describe)

used fertilizer, used fertilizer, use pesticide, use pesticide,

Growing alone or in clusterGrowing alone or in clusterdoes the plant have fruit?does the plant have fruit?

For HW Credit - List other variables For HW Credit - List other variables can think ofcan think of20 – 4 pts20 – 4 pts15 - 3 pts15 - 3 pts10 – 2 pts10 – 2 pts5 – 1 pt5 – 1 pt

Variables

Biology 4Biology 4thth Quarter Quarter DIVERSITY, CLASSIFICATION, GENETICS, AND DIVERSITY, CLASSIFICATION, GENETICS, AND

EVOLUTION EVOLUTION

The Big Idea(s) / Major Understanding(s):The Big Idea(s) / Major Understanding(s):• • Evolution and natural selectionEvolution and natural selection lead to organisms changing over time. lead to organisms changing over time.• • Modern classification systemModern classification system groups organisms according to their degree groups organisms according to their degree of relatedness.of relatedness.

Understand genetics and biological evolution Understand genetics and biological evolution and their impact on organismsand their impact on organisms – –

Why don’t some antibiotics work anymore?Why don’t some antibiotics work anymore?

Week 31 History of LifeWeek 31 History of Life Week 32 Theory of EvolutionWeek 32 Theory of Evolution

Week 33 Mechanisms of EvolutionWeek 33 Mechanisms of Evolution Week 34 Primate EvolutionWeek 34 Primate Evolution

Week 36 Classification of Living ThingsWeek 36 Classification of Living Things Week 37 The Six KingdomsWeek 37 The Six Kingdoms

Weeks 38 and 39 Final ProjectsWeeks 38 and 39 Final Projects

Week 31Week 31

only 8 to goonly 8 to go The History of LifeThe History of Life

Ch 14 Pg 368See video – Carl Sagan Cosmos

Water cools on surface of Earth4.5 bya

First living things appear3.5 bya

Humans appear!!

Geologic Time Scale

when life originatedwhen life originated

3.9 to 3.5 billion years ago (bya)3.9 to 3.5 billion years ago (bya)

First living things appear3.5 bya

fossilfossil

Evidence of an organism that lived Evidence of an organism that lived long ago that is preserved in earth’s long ago that is preserved in earth’s rockrock

paleontologistpaleontologist

Scientist that studies ancient life, like Scientist that studies ancient life, like a detectivea detective

Fossil formationFossil formation

Organisms die and are buried in mud Organisms die and are buried in mud leaving an impressionleaving an impression

Relative datingRelative dating

Determining the Determining the age of fossils by age of fossils by comparing fossil comparing fossil in the layers of in the layers of rock around itrock around it

radiometric radiometric datingdating

Determining the Determining the age of fossilsage of fossils by by measuring the measuring the amount of amount of radioactive radioactive isotopesisotopes

isotopeisotope

Atoms of the Atoms of the same element same element that have that have different different numbers of numbers of neutronsneutrons

geologic time scalegeologic time scale

A chronology of A chronology of the earth’s the earth’s history based on history based on rocks and fossilsrocks and fossils

Precambrian eraPrecambrian era

87% of 87% of earth’s earth’s history, from history, from prokaryotes prokaryotes to beginning to beginning invertebrateinvertebrates (hard s (hard shelled shelled animals, up animals, up to 543 to 543 million years million years ago (mya)ago (mya)

Precambrian Era

Paleozoic eraPaleozoic era

Era where the Era where the amount of amount of oxygen oxygen increased in the increased in the atmosphere atmosphere beforebefore abundant abundant complex life, up complex life, up to 248 million to 248 million years ago (mya)years ago (mya)

Without oxygen, you would be pale!Without oxygen, you would be pale!

old life

13%

of the time life has

been on

earth

87%

Mesozoic eraMesozoic era

Often called the Often called the “age of reptiles” “age of reptiles” with much with much tectonic, climatic tectonic, climatic and evolutionary and evolutionary activity, ended activity, ended with mass with mass extinction 65 myaextinction 65 mya

Don’t mess with dinosaurs!Don’t mess with dinosaurs!

plate plate tectonicstectonics

Theory of how Theory of how continents move – continents move – spreading apart, spreading apart, sliding by or sliding by or pushing against pushing against each othereach other

Like plates on a table pushing Like plates on a table pushing and sliding against each otherand sliding against each other

Video Unfold the earth

Seismic Earthquakes - earthquakes

Plate tectonics - animation

11

2

34

5

6

7

8

9

Cenozoic eraCenozoic era

Our current Our current era, when era, when mammals mammals began to began to flourishflourish

spontaneous spontaneous generationgeneration

The idea that nonliving The idea that nonliving material can produce material can produce life, disproved by life, disproved by Francisco Redi and Francisco Redi and Louis PasteurLouis Pasteur

The idea that living The idea that living organisms come organisms come only from other only from other living organismsliving organisms

biogenesisbiogenesis

protocellprotocell A large ordered structure, enclosed by a membrane A large ordered structure, enclosed by a membrane

that carries out some life activities such as growth that carries out some life activities such as growth and division, and division, show how the first cells may have show how the first cells may have occurredoccurred

link

archaebacteriaarchaebacteria

Prokaryotes that are thought to be the Prokaryotes that are thought to be the first living organism, followed by first living organism, followed by photosynthesizing prokaryotesphotosynthesizing prokaryotes

beginning, origin

endosymbiont theoryendosymbiont theory

Explains how eukaryotes probably evolved Explains how eukaryotes probably evolved from prokaryotic cellsfrom prokaryotic cells

Internal relationship

What does this illustration suggest about the evolution of cells?

HomeworkHomework

– Analyze and critique the four ideas about Analyze and critique the four ideas about the origin of life on pg 388the origin of life on pg 388

OrOr– Make a Make a posterposter of the Geologic Time Scale of the Geologic Time Scale

showing the showing the history of life on Earthhistory of life on Earth – show – show eras, periods, epochs and myaeras, periods, epochs and mya

4 pts. – color with drawings and descriptions, very neat4 pts. – color with drawings and descriptions, very neat3 pts – color with drawings and descriptions, neat3 pts – color with drawings and descriptions, neat2 pts - descriptions, neat2 pts - descriptions, neat

And now, the quiz…And now, the quiz…

A large ordered structure, enclosed by a membrane A large ordered structure, enclosed by a membrane that carries out some life activities such as growth that carries out some life activities such as growth and division, show how the first cells may have and division, show how the first cells may have occurredoccurred

link

Prokaryotes that are thought to be the Prokaryotes that are thought to be the first living organism, followed by first living organism, followed by photosynthesizing prokaryotesphotosynthesizing prokaryotes

– Explains how eukaryotes probably Explains how eukaryotes probably evolved from prokaryotic cellsevolved from prokaryotic cells

A chronology of A chronology of the earth’s the earth’s history based on history based on rocks and fossilsrocks and fossils

Determining the Determining the age of fossils by age of fossils by comparing fossil comparing fossil in the layers of in the layers of rock around itrock around it

Determining the Determining the age of fossilsage of fossils by by measuring the measuring the amount of amount of radioactive radioactive isotopesisotopes

Theory of how Theory of how continents move continents move – spreading – spreading apart, sliding by apart, sliding by or pushing or pushing against each against each otherotherVideo Unfold the earth

Seismic Earthquakes - earthquakes

Plate tectonics - animation

Our current Our current era, when era, when mammals mammals began to began to flourishflourish

The idea that nonliving The idea that nonliving material can produce material can produce life, disproved by life, disproved by Francisco Redi and Francisco Redi and Louis PasteurLouis Pasteur

The idea that living The idea that living organisms come only organisms come only from other living from other living organismsorganisms

3.9 to 3.5 billion years ago (bya)3.9 to 3.5 billion years ago (bya)

Evidence of an organism that lived Evidence of an organism that lived long ago that is preserved in earth’s long ago that is preserved in earth’s rockrock

Scientists that study ancient life, like Scientists that study ancient life, like detectivesdetectives

87% of earth’s 87% of earth’s history, from history, from prokaryotes to prokaryotes to beginning beginning invertebrates invertebrates (hard shelled (hard shelled animals, up to animals, up to 543 million 543 million years ago years ago (mya)(mya)

Era where the Era where the amount of amount of oxygen increased oxygen increased in the in the atmosphere atmosphere beforebefore abundant abundant complex life, up complex life, up to 248 million to 248 million years ago (mya)years ago (mya)

Often called the Often called the “age of reptiles” “age of reptiles” with much with much tectonic, climatic tectonic, climatic and evolutionary and evolutionary activity, ended activity, ended with mass with mass extinction 65 myaextinction 65 mya

mahalomahalo