Term
| How did life begin on Earth? (three different ways) |
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Definition
1. Primordial soup model
2. Miller-Urey Theory
3. Bubble Model |
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Term
| Describe the Primordial Soup Model. |
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Definition
| earths oceans were thought to be filled with many different organic molecules, like a soup that is filled with different vegetables and meat. |
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Term
| Describe the Miller- Urey Theory. |
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Definition
| tested with mixtures of gasses |
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Term
| Describe the Bubble Model. |
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Definition
formed the chemicals needed for life took place within bubbles on oceans surface |
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Term
| What were the first cells on earth like? |
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Definition
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Term
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Definition
| think mitochondria and chloroplasts originated as described by the theory of endosymbiosis. |
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Term
| After most mass extinctions, what generally occurred on Earth? |
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Definition
| more species started to occur after extinction |
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Term
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Definition
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Term
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Definition
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Term
| Most recently developed living thing? |
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Definition
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Term
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Definition
| the process by which different organisms were thought to come from earlier forms of life. |
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Term
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Definition
| a group of organisms of the same species |
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Term
| What is natural selection? |
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Definition
| individuals that have physical or behavorial traits that better suit their environment are more likely to survive and will reproduce sucessfully than those that do not have such traits |
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Term
| Who is behind the idea of natural selection? |
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Definition
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Term
| What does "survival of the fittest" mean? |
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Definition
| the existence of organisms that are best adapted to their environment. |
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Term
| Does natural selection act on genotypes of phenotypes? |
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Definition
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Term
| Define homologous structure. |
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Definition
| a structure thats shares a common ancestry |
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Term
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Definition
| organ that no longer functions (not needed, from evolution) Ex. appendix, wisdom teeth |
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Term
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Definition
| makes up an organism in the early stages of development |
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Term
| 2 scientific pathways for evolution? |
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Definition
| homologous structures and fossils |
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Term
| What is a speciation and a species? |
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Definition
| speciation is the process when biological populations evolve to become distinct species |
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Term
| Why is the fossil record incomplete? |
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Definition
| sediment has to cover an organisms remains in order for fossilization to occur |
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Term
| How are the ages of fossils determined? |
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Definition
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Term
| Contrast a cast and a mold fossil. |
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Definition
| mold is a hollow rock of an organisms remains and a cast is when the rock gets filled with sediment |
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