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25 Cards in this Set
- Front
- Back
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Biology
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Scientific study of living things.
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Life
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An organized genetic unit capable of metabolism, reproduction, & evolution.
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Metabolism
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Total chemical activity of a living organism.
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biological evolution
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Change in genteic compostion of a population over time.
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adaptations
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Differences among living things that enable them to live in different kinds of environments and adopt different lifestyles.
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Lamarack Theory
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Lineage of organisms changed over generations as offspring inherited structures from parents that had become larger and more highly developed.
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Darwin's Theory of Evolution
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1. Reproductive rates of all organisms are high that populations would become enormous if death rates were not equally as high.
2. With each type of organism, there are differences among organisms. 3. Offspring are similar to parents because they inherit parents' features. |
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Natural selection
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Differential survival and reproductive success of individuals.
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Chemical evolution
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4 billion years ago, when random inorganic interactions produced molecules that had a prperty of acting as templates to form similar molecules.
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Three major properties of cells
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1. Cells Capture energy & replicate.
2. Cells are the unit on which all of life is built. 3. Cells only come form other cells. |
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Cells
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Interacting systems of molecules enclosed in a compartment.
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Prokaryotic cells
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Simple cells had no internal membrane-bound compartements.
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Photosynthesis
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Ability to use the energy of sunlight to power metabolism.
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Eukaryotic cells
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Cells with complex internal compartments.
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Sex
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Exchanges of genteic material and reproduction.
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Why does sex increase the rate of evolution?
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Because an organism that exchnages genetic info with another individual produces offspring that is more genetically variable.
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Species
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Genetically independent kinds.
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Capture of Matter & Energy
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1. Coordination of genes
2. Response to the environment 3. Homeostasis 4. Reorganization |
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Hypothesis Prediction
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1. Making observations
2. Asking Questions 3. Forming hypothesis 4. Making predictions 5. Testing predictions |
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How does diversification play a role in reproduction?
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Diversification is driven in part by variatons/changes in the physical environment.
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Homeostasis
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Maintanence of a relatively stable environment.
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Theory of Evolution by Natural Selection - Darwin's Theory
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1. The reproductive rates of all organisms are sufficiently high that populations would be enormous if mortality rates did not balance reproductive rates.
2. Variations among individuals influence how well those individuals survive. 3. Offspring are similar to their parents because they inherit their parents features. |
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What can populations do?
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1. Change the frequency of alelles (natural selection)
2. Population's can evolve, but individuals cannot! |
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Life
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Organized genetic unit capable of metabolism, reproduction, & evolution.
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How do variations result?
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From mutations in alelles.
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