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Vocabulary words

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
cell   membrane covered structure that contains all the materials necessary for life.  
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stimulus   change that affects the activity of the organism  
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homeostasis   maintenance of a stable internal environment  
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sexual reproduction   two parents produce offspring that will share characteristics of both parents  
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asexual reproduction   single parent produces offspring that are identical to the parent  
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heredity   passing of traits from one generation to the next  
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metabolism   total of all of the chemical activities that the organism performs  
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producer   can make their own food  
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consumer   must eat (consume) other organisms to get food  
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decomposer   get food by breaking down the nutrients in dead organisms or animal wastes  
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protein   made up of amino acids and are needed to build and repair body structures and to regulate processes in the body  
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carbohydrate   energy-giving nutrients that include sugars, starches and fiber; made up of carbon, hydrogen and oxygen  
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lipid   compounds that can't mix with water; store energy and form cell membranes; fats and steroids  
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phospholipid   lipid that contains phosphorus; are molecules that form much of the cell membrane; head attracted to water - tail is not  
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ATP   adenosine triphosphate; major energy-carrying cell in the cell  
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nucleic acid   large molecules made up of subunits called nucleotides;  
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