1. Variables
Important Factors in Choosing Papaya
(to be narrowed down to 10)
Demographics
place where growing
origin of plant- commercial, nursery,
friend, volunteer, etc)
height of plant
garden or wild
intention of plant (to eat, ornamental, use
of plant – eating, giving away, selling?,
Condition of the plant (diseased
(describe)
used fertilizer,
use pesticide,
Growing alone or in cluster
does the plant have fruit?
For HW Credit - List other variables
can think of
20 – 4 pts
15 - 3 pts
10 – 2 pts
5 – 1 pt

2. Biology 4th Quarter
DIVERSITY, CLASSIFICATION, GENETICS, AND
EVOLUTION
Understand genetics and biological evolution
and their impact on organisms –
Why don’t some antibiotics work anymore?
 The Big Idea(s) / Major Understanding(s):
• Evolution and natural selection lead to organisms changing over time.
• Modern classification system groups organisms according to their degree
of relatedness.
Week 31 History of Life
 Week 32 Theory of Evolution
 Week 33 Mechanisms of Evolution
 Week 34 Primate Evolution
 Week 36 Classification of Living Things
 Week 37 The Six Kingdoms
 Weeks 38 and 39 Final Projects

3. Week 31
only 8 to go The History of Life
Water Humans Geologic Time Scale
cools on appear!!
surface
of Earth
4.5 bya
First
living
things
appear
Ch 14 Pg 368 3.5 bya
See video – Carl Sagan Cosmos

4. when life originated
 3.9 to 3.5 billion years ago (bya)
First living things
appear
3.5 bya

5. fossil
 Evidence of an organism that lived long ago
that is preserved in earth’s rock

6. paleontologist
 Scientist that studies ancient life, like a
detective

7. Fossil formation
 Organisms die and are buried in mud
leaving an impression

8. Relative dating
 Determining the age
of fossils by
comparing fossil in
the layers of rock
around it

9. radiometric
isotope
dating
 Determining the Atoms of the same
age of fossils by element that have
measuring the different numbers
amount of of neutrons
radioactive
isotopes

10. geologic time scale
 A chronology of
the earth’s history
based on rocks
and fossils

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

12. Paleozoic era
old life
13%
 Era where the of the
time
amount of life
oxygen has
been
increased in the on
atmosphere earth
before abundant
complex life, up
to 248 million
years ago (mya)
 Without oxygen, you would be pale! 87%

13. Mesozoic era
 Often called the “age
of reptiles” with much
tectonic, climatic and
evolutionary activity,
ended with mass
extinction 65 mya
 Don’t mess with dinosaurs!

14. plate tectonics 2
6
 Theory of how
1 5
continents move – 8
4
spreading apart, 3 9
sliding by or
7
pushing against
each other
 Like plates on a table pushing
and sliding against each other
Video Unfold the earth
Seismic Earthquakes -
earthquakes
Plate tectonics - animation

15. Cenozoic era
 Our current era,
when mammals
began to flourish

16. spontaneous
generation biogenesis
 The idea that nonliving The idea that living
material can produce organisms come only
life, disproved by from other living
Francisco Redi and
Louis Pasteur organisms

17. protocell
 A large ordered structure, enclosed by a membrane that
carries out some life activities such as growth and division,
show how the first cells may have occurred
link

18. archaebacteria
beginning, origin
 Prokaryotes that are thought to be the first
living organism, followed by
photosynthesizing prokaryotes

19. endosymbiont theory
Internal relationship
Explains how eukaryotes probably evolved from
prokaryotic cells
What does this illustration suggest about the evolution of cells?

20. Homework
– Analyze and critique the four ideas about the
origin of life on pg 388
Or
– Make a poster of the Geologic Time Scale
showing the history of life on Earth – show
eras, periods, epochs and mya
4 pts. – color with drawings and descriptions, very neat
3 pts – color with drawings and descriptions, neat
2 pts - descriptions, neat

21. And now, the quiz…

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

23.  Prokaryotes that are thought to be the first
living organism, followed by
photosynthesizing prokaryotes

24. – Explains how eukaryotes probably evolved from
prokaryotic cells

25.  A chronology of
the earth’s history
based on rocks
and fossils

26.  Determining the age
of fossils by
comparing fossil in
the layers of rock
around it

27.  Determining the
age of fossils by
measuring the
amount of
radioactive
isotopes

28.  Theory of how
continents move –
spreading apart,
sliding by or
pushing against
each other
Video Unfold the earth
Seismic Earthquakes -
earthquakes
Plate tectonics - animation

29.  Our current era,
when mammals
began to flourish

30.  The idea that nonliving The idea that living
material can produce organisms come only
life, disproved by from other living
Francisco Redi and
Louis Pasteur organisms

31.  3.9 to 3.5 billion years ago (bya)

32.  Evidence of an organism that lived long ago
that is preserved in earth’s rock

33.  Scientists that study ancient life, like
detectives

34.  87% of earth’s
history, from
prokaryotes to
beginning
invertebrates
(hard shelled
animals, up to
543 million
years ago (mya)

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

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

37. mahalo