Unit 2 Review Day 2.

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Presentation transcript:

Unit 2 Review Day 2

Origin of life Section

Theory of Spontaneous Generation… Contribution: Pasteur – disproved the entire theory Of Spontaneous Generation by proving that bacteria exists in the air. Problem: We did not know where life came from? Life needs water and oxygen!

Primordial Soup Theory The first organism must have been prokaryotic, anaerobic and derived from inorganic (non-living) compounds must have combined with water vapor in to form water. Miller and Urey Experiment Problem: No other scientist can replicate the experiment

Endosymbiosis Theory Eukaryotes obtained their organelles by engulfing prokaryotes

Hominid Evolution Section…

Bipedalism Hominids became bipedal=walk on 2 legs Bipedalism allows you to use your arms to carry things while you walk

With evolution came: Language Manufacture of tools Making tools = no longer using teeth as basic tools = smaller jaw size

Evolutionary relationships

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