11/10/10 – “F” Day

11/10/10 – “F” DayObjective: To understand how life evolved from coacervates to complex multicellular creatures.

Do Now: What molecules were necessary for life to exist?

Today:Complete Geologic Timeline ActivityEarly Earth and Evolution Notes

HW – Webquest to be completed by Monday, working at library later this week!

11/12/10 – “B” DayObjective: To understand how life evolved from coacervates to complex multi-cellular creatures.

Do Now: What were the first living organisms like?

Today:Geologic Timeline/Rock Strata DataBig Bang to Eukaryotic Cell Activity

HW – Webquest to be completed by Monday, working at library later this week!

11/15/10 – “C” DayObjective: To understand how life evolved from coacervates to complex multi-cellular creatures.

Do Now: Get out John Kyrk Evolution Questions – Any Questions?

Today:John Kyrk Evolution – HW Quiz

IRP Logbook Expectations

Early Earth Notes

Which Came First Activity

11/16/10 – “D” DayObjective: To understand how life evolved from coacervates to complex multi-cellular creatures.

Do Now: How did coacervates (cells) change over time?

Today:STATS help announcement

Finish Notes

Earth History – Evolution of Coacervates Activity

11/17/10 – “E” DayObjective: To understand how life evolved from coacervates to complex multi-cellular creatures.

Do Now: Which came first (Explain) chemical evolution or evolution of life?

Today:STATS help today after school

Origin of Life

11/18/10 – “F” DayObjective: To understand how life evolved from coacervates to complex multi-cellular creatures.

Do Now:

Today:Complete Origin of Life

Discuss/Read Margulis Article

Tomorrow:Eukaryotic vs. Prokaryotic – Microscope Inquiry Lab

11/22/10 – “B” DayObjective: To compare the structures of prokaryotic and eukaryotic cells

Do Now: What is a prokaryote? A eukaryote?

Today:Microscope Lab!

11/23/10 – “C” DayObjective: To compare the structures of prokaryotic and eukaryotic cells

Do Now: On Low power…what is thediameter of thismicrobe?

Today:Continue Microscope Lab!

“I have… You have…”

Earth (Life) History

1. The Big Bang Theory 14 Billion Years ago

• Currently accepted explanation for beginning of universe

• Based on the theory of relativity

• Cosmic Explosion (“BIG BANG”) - universe has been expanding and cooling since then

• * Supporting evidence: Cosmic background radiation

2. Cosmic dust and gas condense forming planets and stars.

• Planet Earth forms! 4.6 BYA

Gases are released from volcanoes, etc..

Atmosphere created

3. Reducing Atmosphere - held in place by gravity.

• Contains N2 (Nitrogen gas) , CO2, H2O, and maybe H2S (hydrogen sulfide), NH3 (ammonia) and CH4 (methane).

• There was no O2 or O3

• Earth Surface U.V.

4. UV radiation chemical evolution

• Warm oceans

• lots of N2, H2S, NH3 Organic Soup

energy

5. Organic Soup

• a.a., lipids, & carbs clump together in a primitive organization = COACERVATES– Predecessors to the first true cells

6. Advanced Coacervates

• Use RNA to make copies = REPRODUCTION

7. Reproduction 1st cells

• 3.5 BYA

All first cells

• Archaebacteria

• Prokaryotes - “ Before nucleus”

• Anaerobes

8. Archeabacteria - advanced

• 3-2.5 BYA

• Chemoautotrophs

• Photosynthesis by cyanobacteria

releases O2 in atmosphere

9. Oxidizing atmosphere (21% O2)

• 2.5 BYA

• many archeobacteria go extinct

• O3 UV shield

• O2 Aerobic respiration

10. Aerobic Respiration

• Efficient energy for cells

• New cell design = EUKARYOTIC CELLS

• “advanced” cells with nuclei

11. Eukaryotic cells

• 1.5 BYA

• Theory of Endosymbiosis - Big cells engulf and incorporate small cells as organelles.

• Remember Dr. Jeon’s Amoeba’s??

• Archeabacteria organelles

• Cells are now more complex and diverse.

12. Multicellular Organisms

• 0.57 BYA

• Specialization of cells