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LIVINGENVIRONMENT-1

chp 1 vocabulary

active transportamino acids
cell basic unit of structure and function that makes up all organisms
cell membrane the thin boundary between the cell and its environment
cell respiration process in which nutrients are broken apart, releasing the chemical energy stored in them
chloroplast green organelle that contains chlorophyll, where photosynthesis takes place
circulation the flow of materials within a cell as well as between parts of a multicellular organism
cytoplasm the jellylike substance that is between the cell membrane and the nucleus and that contains specialized structures
digestion the process that breaks down large food molecules into simpler molecules that the organism can use
diffusion the movement of molecules from areas of high concentration to areas of low concentration
enzymes proteins that speed up the rate of chemical reactions in living things
excretion the removal of all wastes produced by the cells of the body
homeostasis ability of an organism to maintain a stable internal environment even when the external environment changes
Created by: jm200
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