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25 Cards in this Set
- Front
- Back
Living organisms are: |
Composed of cells, are complex and ordered, respond to their environment, can grow and reproduce, obtain and use energy, maintain internal balance, allow for evolutionary adaptation. |
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Levels of organization: |
atoms-> molecules -> organelles -> cells |
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The ____ is the basic unit of life. |
Cell. |
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Levels of organization: organismal level |
tissues -> organs -> organ systems -> organism |
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Levels of organization: population level |
population -> species -> community -> ecosystem |
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New properties present at one level that are not seen in the previous level. |
Emergent properties. |
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Science aims to understand: |
The natural world through observation and reasoning. |
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Science begins with: |
Observations, therefore, much of science is purely descriptive. |
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_______ uses both deductive and inductive reasoning. |
Science. |
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_______ ________ uses general principles to make specific predictions. |
Deductive reasoning. |
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_______ _______ uses specific observations to develop general conclusions. |
Inductive reasoning. |
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Scientists use a systematic approach to gain understanding of the natural world. This is: |
Observation, hypothesis formation, prediction, experimentation, and then conclusion. |
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A ________ is a possible explanation for an observation. |
hypothesis |
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A hypothesis: |
Must be tested to determine its validity, is often tested in many different ways and allows for predictions to be made. |
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The Experiment: |
Tests the hypothesis, must be carefully designed to test only one variable at a time, consists of a test experiment and a control experiment. |
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If the hypothesis is valid, the scientist can predict the result of the: |
experiment. |
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To break a complex process down to its simpler parts is: |
Reductionism. |
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To simulate phenomena that are difficult to study directly: |
Models. |
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A scientific theory is: |
A body of interconnected concepts, supported by experimental evidence and scientific reasoning, and expresses ideas of which we are most certain. |
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What is the cell theory? |
All living organisms are made of cells, and all living cells come from preexisting cells. |
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Molecular basis of inheritance: |
DNA encodes genes which control living organisms and are passed from one generation to the next. |
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The proper function of a molecule is dependent on its ________. |
structure. |
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The structure of a molecule can often tell us about its __________. |
Function. |
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Living organisms have evolved from the same origin event. The diversity of life is the result of: |
Evolutionary change. |
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Critical characteristics of early organisms are preserved and passed on to future generations.. |
Evolutionary conservation. |