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Hannah Chap. 3 vocab

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Term
Definition
Active Transport   Energy-requiring process in which transport proteins bind with particles and move them through a cell membrane.  
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Cellular Respiration   Chemical reactions occur that break down food molecules into simpler substances and release their stored energy.  
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Diffusion   A type of passive transport in cells in which molecules move from area where there are more of them to areas where there are fewer of them.  
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Endocytosis   Process by which a cell takes in a substance by surrounding it with the cell membrane.  
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Enzyme   A type of protein that regulates nearly all chemical reactions in a cell.  
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Equilibrum   A state in which opposing forces or influences are balanced.  
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Exocytosis   Process by which vesicles released their contents outside the cell.  
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Fermentation   Process by which oxygen lacking cells and some one-celled organisms released small amounts of energy from glucose molecules and produce waste such as alcohol,carbon dioxide, and lactic acid.  
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Inorganic Compound   Compound,such as H2O, that is made from elements other than carbon and whose atoms usually can be arranged in only one structre.  
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Metabolism   The total of all chemical reaction in an organism.  
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Mixture   A combination of substances in which the individual substances do not change or combine chemically but instead retain their own individual properties;combination of them.  
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Organic Compound   Compound that always contain hydrogen and carbon;carbohydrates,lipids,proteins,and nucleic acids are organic compounds found in living things.  
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Osmosis   A type of passive transport that occurs when water diffuses through a cell membrane.  
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Passive Transport   Movement of substances through a cell membrane without the use of cellular energy;includes diffusion,osmosis,and facilitated diffusion.  
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Photosynthes   Process by which plants and many other producers use light energy to produce a simple sugar from carbon dioxide and water and give off oxygen.  
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