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Science

Chapter 3 Vocabulary

TermDefinition
endocytosis process by which a cell takes in a substance by surrounding it with the cell membrane
mixture a combination of substances that retain their properties when combined (example: tossed salad)
exocytosis process by which vesicles release their contents OUTSIDE the cell
osmosis the diffusion of water through a cell membrane
metabolism the total of all chemical reactions in an organism
diffusion type of passive transport in cells in which molecules move from areas where there are more of them to areas where there are fewer of them
respiration series of chemical reactions used to release energy stored in food
enzyme type of protein that regulates nearly all chemical reactions in a cell
inorganic compound compound such as water that is made of other elements other than carbon and hydrogen and whose atoms can be arranged in only one structure
organic compound compound that always contains carbon and hydrogen (examples: lipids, carbohydrates, proteins, and nucleic acids)
active transport energy-requiring process in which transport proteins bind with particles and move them through the cell membrane
equilibrium occurs when molecules of one substance are spread evenly throughout another substance
photosynthesis process by which plants use light energy from the sun to make food
fermentation process by which oxygen-lacking cells and some one-celled organisms release small amounts of energy from sugar and produce wastes such as alcohol, carbon dioxide, and lactic acid
passive transport movement of substances through a cell membrane without the use of cellular energy
Created by: jrobertson1
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