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vocabulary words on chapter 8

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Term
Definition
autotroph   organism that can capture energy from sunlight or chemicals and use it to produce its own food inorganic compounds; also called a producer  
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heterotroph   organism that it obtains energy from the foods it consumes; also called a consumer  
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adenosine triphosphate   ATP; one of the principal chemical compounds that living things use to store and release energy  
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photosynthesis   process by which plants and some other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugar and starches  
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pigment   light absorbing molecule  
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chlorophyll   principal pigment of plants and other photosynthetic organisms; captures light energy  
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thylakoid   saclike photosynthetic membrane found in chloroplasts  
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photosystem   light-collecting units of the chloroplast  
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stroma   region outside the thylakoid membrane in chloroplast  
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NADP+   nicotinamide adenine dinucleotide phosphate; one of the carrier molecules that transfer high-energy electrons from the chlorophyll to other molecules  
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light-dependent reaction   reactions of photosynthesis that use energy from light to produce ATP and NADPH  
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ATP synthase   large protein that uses energy from H+ ions to bind to ADP and a phosphate group together to produce ATP  
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Calvin Cycle   reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars  
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