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Goal 3.05b: Origins and History of Life

Goal 3.05b: Origins and History of Life. Roots: Endo = within Sym = same Geo = earth Para = around Prim = first. scrapetv.com. Earth formed about 4.6 billion years ago.

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Goal 3.05b: Origins and History of Life

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  1. Goal 3.05b: Origins and History of Life Roots: Endo = within Sym = same Geo = earth Para = around Prim = first scrapetv.com

  2. Earth formed about 4.6 billion years ago. Disc. Ed. Begin here and also show “volcanoes, cosmic rain, and extremophiles” http://player.discoveryeducation.com/index.cfm?guidAssetId=DC842144-801C-45DB-8A2A-C4F06F7A8BFC First forms of LIFE arose 3.5 billion years ago. msnbc.msn.com trendsupdates.com

  3. What was Early Earth like?...BAD!!! Atmosphere: Methane, CO2, water, nitrogen, hydrogen, etc. No OXYGEN!

  4. Miller and Urey experiment showed that life could have formed out of the simple compounds present during early Earth. Produced Organic Compounds commons.wikimedia.org

  5. Proteinoid Microsphere = structure similar to cells Semipermeable membrane Energy Storage! May have evolved into cells. No DNA or RNA, so NOT cells. biologiateorica.it

  6. PRIMITIVE ORGANISMS! xenotechresearch.com NO OXYGEN?...NO PROBLEM! ANAEROBIC RESPIRATION personal.georgiasouthern.edu

  7. sun energy  6CO2 + 6H2O + + 6O2 C6H12O6 Bacteria capable of photosynthesis emerges. PHOTOSYNTHESIS! Oxygen! Ozone layer trapped the Oxygen from photosynthesis and created a new kind of atmosphere. Many organisms could not adapt to oxygenated air and went extinct. Others evolved into oxygen breathing species. Ozone envis.tropmet.res.in

  8. FYI…This is the hole in our Ozone now.Will we have to evolve or go extinct? blogs.nature.com

  9. Prokaryotic organisms appeared about 2 billion years ago. ENDOSYMBIONT Theory Some prokaryotic cells began evolving internal cell membranes. Result = primitive eukaryotic cell. Some prokaryotic cells entered the eukaryotic cells and developed a symbiotic relationship with the eukaryotic cell. The inner prokaryotic cells evolved into cell organelles.

  10. Endosymbiont Theory Sexual Reproduction brought about variation and evolution into modern cells. virtuallaboratory.colorado.edu

  11. Origins of humankind (interactive)/ Riddle of the Bones (interactive) / Designer Babies? (interactive) http://www.pbs.org/wgbh/evolution/humans/index.html

  12. Perform the following activities as instructed using the materials provided: • Open the jar and pour the contents onto your desk. • Pick up the penny and place it inside the ziplock bag. Close the bag. • Stick the tack into the cardboard then remove it. • Write your name in the center of the paper. • Now cut your name out of the paper. • Paperclip the cut piece of paper (with your name) to the remaining piece of paper. • Staple the paper-clipped papers to a sheet of notebook paper. • Remove the paperclip and place the stapled papers into the homework box. This will insure you receive an activity grade. • Open the door to the work room then close it back gently. • Place the tack, the penny and the paper clip into the plastic jar and close it. Tape both of your thumbs to your hands like this… clker.com You may need a partner to help you tape your thumbs.

  13. Speciation = formation of a new species Behavioral Isolation = isolation due to differences in BEHAVIORS. http://news.nationalgeographic.com/news/2007/02/070221-riflebird-video.html astadnik.wordpress.com Geographic Isolation = isolation due to differences in LOCATIONS. http://bcs.whfreeman.com/thelifewire/content/chp24/2402002.html

  14. Speciation = formation of a new species Temporal Isolation = isolation due to differences in SCHEDULES. muleabides.wordpress.com Liger Parapatric Speciation = isolation due to differences in ENVIRONMENTS. evolution.berkeley.edu

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