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Chapter 1 biology words

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Term
Definition
Biology   The study of Life  
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Cytology   Study of Cells  
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Botany   Study of Plants  
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Ethics   Moral and Principles  
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Organization    
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Cell   Smallest unit that can perform life's processes  
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Unicellular   Organisms that are made up of 1 cell such as bacteria  
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Multicellular   Organisms made up of multiple cells such as humans or trees  
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Organ   Structures that carry out specialized jobs within an organ system  
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Tissue   Groups of cells that have similar abilities that allow the organ to function  
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Organelle   Tiny structures that carry out functions necessary for the cell to live  
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Biological Molecule   Chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions  
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Homeostasis   Constant internal condition  
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Metabolism   Eat food to get energy  
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Cell Division   Formation of two new cells from one existing cell  
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Development   Organism becomes a mature adult  
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Reproduction   Making more of themselves, essential for continuation of species  
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Gene   Short segment of DNA that contains instructions for a single trait of an organism  
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Domain   The three major subdivisions of all organisms  
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Kingdom   Another system of grouping organisms divides all life into six major categories  
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Ecology   Branch of biology that studies organisms interacting with each other and the enviroment  
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Ecosystem   Communities of living species and their physical enviroments  
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Evolution   Change over time  
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Natural Selection   Organisms that have certain favorable traits that help them survive and reproduce  
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Adaption   Help organisms ability to reproduce and survive  
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Scientific Method   To learn how the natural world works  
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Observation   Perceiving a natural occurrence that causes someone to pose a question  
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Hypothesis   Educated guess  
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Prediction   Statement that forecasts what would happen in a test situation if the hypothesis were true  
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Experiment   Used to test a hypothesis and it's predictions  
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Control Group   Provides a normal standard against which the biologist can compare result of the experimental group  
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Experimental Group   Identical to the control group except one factor, the independent variable  
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Independent Variable   What is being manipulated  
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Dependent Variable   Scientist observes or measures this variable, also called the responding variable  
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Theory   When a set of related hypothesis is confirmed to be true many times, and it can explain a great amount of data, scientists often reclassify as a theory  
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Peer Review   Scientists who are experts in the field anonymously critique and read that research paper  
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