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39 Cards in this Set
- Front
- Back
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Organazation |
Order of parts in an animal |
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Organs |
Specialized jobs within the organ system |
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Tissues |
Groups of cells |
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Organelles |
Tiny structures that carry out functions necessary for the cell to stay alive |
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Biological compounds |
Chemical compounds that bring energy and physical structure and movement to the cell |
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Homeostasis |
The maintenance of a stable level of internal conditions. |
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Metabolism |
The sum of all chemical reactions that take in and transform energy and materials from the environment |
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Cell division |
Two new cells come from the old one |
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Development |
The process by which an organism becomes a mature adult |
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Reproduction |
Making offspring |
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Gene |
Contains DNA |
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Major subdivisions of classification |
Domains (bacteria, archaea, and Eukaria) |
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Six smaller divisions |
Kingdoms |
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Ecology |
Study of organisms interacting with their environment. |
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Ecosystem |
Communities of living species and their physical environment |
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Evolution |
Descent with modification |
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Natural selection |
Organisms that have favorable traits that help them survive |
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Adaptation |
Traits that improve an individual's ability to survive |
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Scientific method |
An organized approach to learn how the natural world works |
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Observation |
The act of perceiving a natural occurrence that causes one to pose a question |
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Hypothesis |
Proposed explanation for the way something acts |
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Prediction |
A statement that forecasts the outcome |
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Expirement |
Used to test the hypothesis and its predictions |
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Control group |
The group that the biologist can compare to |
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Expire mental group |
Identical to the control group except for one factor, the independent variable. |
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Dependent variable |
The variable that is not controlled or the "responding variable" |
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Theory |
When a hypothesis is confirmed |
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Compound light microscope |
Shines light through a specimen to observe it |
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Eyepiece |
It magnifies the image |
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Objective lens |
Enlarges the image of a specimen |
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Stage |
Platform that holds the specimen |
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Light source |
Light bulb that lights up specimen |
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Magnification |
Increases the objects apparent size |
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Nosepiece |
Objective lens that rotates above the specimen |
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Resolution |
Power to show details clearly in an image |
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Scanning electric microscope |
Passes a beam of electrons over the specimens surface |
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Transmission electron microscope |
Transmits a beam of electrons through a very thinly sliced specimen |
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Metric system |
Decimal system based on the power of 10 |
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Base units |
Describe length mass and time |
