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chapter 7 part2

73 74

QuestionAnswer
cell membrane a thin flexible barrier
cell wall a strong supporting layer around the membrane
lipid bilayer the composition of nearly all cell membranes
concentration mass of solute in a given volume of solution or mass/volume
diffusion when particles move from an area wit more concentration to an area of less concentration
equilibrium when the concentration of the solute is the same throughout a system
osmosis the diffusion of water through a selectively permeable membrane
isotonic "same strength"
hypertonic "above strength"
hypotonic "below strength"
facilitated diffusion the diffusion of glucose across the membrane
active transport when cells must move materials in opposite direction- against a concentration difference
endocytosis the process of taking material into the cell by means of infoldings, or pockets, of the cell membrane
phagocytosis "cell eating"
pinocytosis when tiny pockets form along the cell membrane ,fill with liquid , and pinch off to form vacuoles within the cell
exocytosis when cells also release large amounts of material from the cell
cell specialization when cells throughout an organism develop in different ways to perform different tasks
tissue a group of similar cells that perform a particular function
organ when many groups of tissues work together
organ system when a group of organs work together to perform a specific function
Created by: cdurkee
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