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New Chapter 1.1

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Answer
biology   the study of living things  
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organization   hierarchy-the combination of simple structures to produce more complex structures  
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cell   the basic unit of living things  
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unicellular   organisms such as bacteria are composed of one cell  
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multicellular   organisms such as humans are composed of many cells  
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organs   groups of tissues make these  
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tissues   groups of cells make these  
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organelle   a small, specialized unit inside a cell  
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biological molecules   RNA, DNA, proteins, carbohydrates, lipids  
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homeostasis   maintenance of constant and stable internal conditions  
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metabolism   the production of energy through the process of making and breaking down molecules  
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cell division   the multiplication of cells through processes such as mitosis  
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development   the process by which an organism becomes a mature adult  
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reproduction   when organisms make more of their own kind  
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gene   a short segment of DNA that contains instructions for the dvelopment of a single trait of an organism  
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