IB Biology HL Unit 3: The Earliest Cells
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15 Terms
Conditions of Early Earth
“Reducing Atmosphere”, Hot temperatures, High UV Radiation, Volcanic Activity, and Asteroid Bombardment
What do inorganic molecules not have?
Carbon and Hydrogen within the same molecule
What do organic molecules have?
Carbon and Hydrogen
What did the Miller-Urey experiment test?
Showing whether simple carbon compounds can form inorganic compounds
What does step 2 represent?
The combination of methane, ammonia, and hydrogen gases to simulate the atmosphere.
How are models beneficial in the scientific community?
They can help represent natural phenomena
All models have…
limitations
What is step 1 in the Oparin-Haldane hypothesis
Formation of simple organic monomers
What is step 2 in the Oparin-Haldane hypothesis
Assembly of carbon compounds into polymers
What is step 3 in the Oparin-Haldane hypothesis
Formation of a polymer that can self replicate.
What is step 4 in the Oparin-Haldane hypothesis
Packaging of molecules into compartments with an internal chemistry different from the surroundings
What is a unique property of RNA
It can be it’s own catalyst as well as catalyze other reactions.
What does LUCA stand for
Last Universal Common Ancestor