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Chapter 3

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
Atom   tiny building blocks of mater made up of protons, neutrons and electrons  
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element   a substance that contains only one type of atom  
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compound   matter that is made up of 2 or more elements  
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organic compound   compound that always contains hydrogen and carbon; associated with living things  
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inorganic compound   made of elements other than carbon; associated with non living things  
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enzymes   type of protein that regulates nearly all chemical reactions in cells  
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passive transport   movement of substances through a cell membrane without the use of cellular energy  
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diffusion   a type of passive transport in cells in which molecules move from an area where there are more to areas where there are fewer of them  
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equilibrium   occurs when molecules of one substance are spread evenly through out another substance  
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osmosis   type of transport that occurs when water diffuses through a cell membrane  
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active transport   energy requiring process in which transport proteins bind with particles and move them through a cell membrane  
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exocytosis   process by which vesicles release their contents outside the cell  
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endocytosis   the process by which cells take in a substance surrounding it with the cell membrane  
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metabolism   total of all chemical reactions in an organism  
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photosynthesis   food making process by which plants and many other producers use light energy to produce glucose and oxygen from carbon dioxide  
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respiration   a series of chemical reactions used to release energy stored in food molecules  
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Created by: sbeck
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