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Biology 101
The Origin Of Life
16
Biology
Undergraduate 1
10/29/2009

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Term
Stanley Miller's Experiment
Definition
1953-Made mini primitive Earth, with gases, chonps, heat, water vapor, electrical storms, electroids, boiling water. 2 days later he got amino acids
Term
Protocell
Definition
basic cells consisting of carbs, proteins, lipids, and nucleic acids surrounded by a membrane.
Term
How did Biomolecules turn into cells?
Definition
protocells were synthesized in the lab and found complex cellular behavior.
Term
Complex Cellular behavior
Definition
double membrane, basic movement, ATP synthesis, DIVISION
Term
How did cells get nutrients?
Definition
Autotrophic to create own energy. Later became heterotrophic.
Term
Origin Of Life Steps
Inorganic --Organic
Definition
1. Stanley Millers Experiment-biomolecules
2. Biomolecules synthesized to become cells.
3. Protocells got nutrients by becoming autotrophic.
4. Cyanobacteria created oxygen for ozone layer.
5. Endosymbiant Theory
6. Unicellular cells exposed to high 02 levels clumped to form multicellular.
Term
Singularity---The Big Bang Theory
Definition
all matter of universe in one point-infinite energy and density. Exploded as soon as forming.
Term
Cambrian Explosion
Definition
oxygen levels raised and the fossil record dropped
Term
Endosymbiant Theory
Definition
Chloroplast and mitochondria act like bacteria cell to form mutualistic relationships.
Term
Volvox
Definition
ball of protists
Term
Prokaryotes work?
Definition
rarely alone
Term
How did unicellular cells become multicellular?
Definition
cells exposed to high oxygen levels instantly clump together and coordinate metabolism. division of labor
Term
Evolution
Definition
Descent with modification by natural selection
Term
Concepts of Evolution
Definition
populations evolve, more born than survive, more advantageous traits passed on through generations, based on random mutations
Term
Differential Reproductive Success
Definition
bad traits dont survive, good traits survive.
Term
alternative evolution theory
Definition
intelligent design
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