Early Earth Foldable

1
Early Earth Foldable

• Ch 14
• Fold 2 papers so that there are 4 flaps. The
  Titles of the for should be
• Redi and Pasteur
• Miller and Urey
• Endosymbiont Theory
• Fossil Record

2
Redi and Pasteurwrite bullet points and cut out
and glue left 2 pictures

• For a long time scientists thought life came from
  non-living things (spontaneous generation)
• Redi and Pastuer proved that life only came from
  other living things (biogenesis) with their
  experiments
• Redi used covered rotting meat to prove maggots
  came from flies not the meat itself
• Pasteur used flasks with broth that filtered out
  microorganisms in the air

3
Redis experiment
Pasteurs experiment
http//elf.xs.edu.ph/mywiki/images/Redi_exp.gif ht
tp//upload.wikimedia.org/wikipedia/commons/2/27/E
xperiment_Pasteur_English.jpg
4
Miller and Urey-- On the underside of the 2nd
flap write the following

• Early earth atmosphere was composed of Carbon
  dioxide, water, nitrogen, ammonia, methane and
  hydrogen gas
• These early components combine with lightening
  gave the primordial soup mixture to make the
  first early organic molecules (building blocks of
  living things) according to Miller and Ureys
  theory

5
Cut out picture and glue it down and write the
following bullets.

• Miller and Urey used this set up to simulate the
  early Earths conditions and made amino acids,
  fatty acids, nucleoties and monosaccharides, or
  the building blocks of organic molecules.
• This proved it could have happened this way.

6
Endosymbiont Theorywrite the following bullets

• Building blocks then built the organic molecules,
  then organic molecules built the first
  cellsanaerobic, heterotrophic prokaryotes
• Adaptations such as photosynthesis (made oxygen),
  aerobic respiration (used oxygen and made more
  ATP than before) occurred
• Then larger cells engulfed smaller cells that did
  photosynthesis or aerobic respiration and used
  them in a symbiotic relationships (endosymbiont
  theory)

7
Cut out last picture and glue it down and write
the bullet below.

• This is how eukaryotes evolved from prokaryotes.

http//learn.genetics.utah.edu/content/begin/cells
/organelles/images/endosymbiosis.jpg
8
Fossil Recordwrite the bullet below and then cut
out the timeline

• Fossil record is used to date when organisms
  lived based upon radioactive measurements
  (absolute dating) or where they occur in layers
  of rock (relative datingolder fossils are in
  lower layers)

9
Basics of each Era

• Precambrian4.6 billion years ago to 542 mya 1st
  life at 4 billion years, 1st prokaryotes, 1st
  eukaryotes, 1st multicellular organisms
• Paleozoic542 mya to 251 mya appearance of 1st
  fish, amphibians, reptiles, land plants, birds
• Mesozoic251 mya to 66 mya appearance of
  mammals, flowering plants, insects dominated by
  DINOSAURS and CONE-BEARING PLANTS
• Cenozoic66 mya to present appearance of humans
  dominanted by MAMMALS AND FLOWERING PLANTS