Early Earth Foldable - Winston-Salem/Forsyth County Schools

Early Earth Foldable - Winston-Salem/Forsyth County Schools

Early Earth Foldable Ch 14 Fold 2 papers so that there are 4 flaps. The Titles of the for should be: 1) Redi and Pasteur 2) Miller and Urey 3) Endosymbiont Theory 4) Fossil Record 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 Redis experiment Pasteurs

experiment http://elf.xs.edu.ph/mywiki/images/ Redi_exp.gif http://upload.wikimedia.org/ wikipedia/commons/2/27/ Experiment_Pasteur_English.jpg 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 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. Endosymbiont Theorywrite the following bullets Building blocks then built the organic molecules, then organic molecules built the first cells anaerobic, 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) 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 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) 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

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