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Astronomy 141 Life in the Universe Prof. Scott Gaudi |
Key Ideas
What is Life?
We can identify six conditions
Order
Growth and Development
Utilizes Energy
Response to Environment
Reproduction
Evolutionary Adaptation
Evolution
Origin of the Theory of Evolution
Two Facts and a Conclusion
Beneficial traits are naturally selected.
Evidence for Evolution
Carbon chemistry
All Hail Carbon
Carbon forms basis of cells
Kinds of molecules in cells
Role of cells
Two varieties of cells
Metabolic Needs of Life
Source of energy (fuel metabolism)
All Hail Water
DNA
DNA Code
DNA Replication and Mutations
Mutations
DNA and the Tree of Life
Scientist can determine, or sequence, the genomes of organisms on Earth and look for similarities.
See A Note about Graphics to learn why the graphics shown in the lectures are generally not reproduced with these notes.
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