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chapter seven2

flashcards

QuestionAnswer
cell wall layer around the membrane
lipid bilayer strong layer b/w the cell and its surroundings
concentration mass of a solute in a given volume of a solution
diffusion particles move from a more concentrated area to a less concentrated area
equilibrium when the concentration of a solute is the same throughout a system..system has reached....
osmosis diffusion of water through a selectively permeable membrane
isotonic two solutions with the "same strength"
hypertonic two solutions and one have above strength
hypotonic below strength
faciltated diffusion 100s of different protein channels have been found that allow particular substances to cross different membranes
active transport transports of ions or molecules across a cell membrane
endocytosis taking materials into the cell by means of infoldings of tyhe cell membrane
phagocytosis extensions of cytoplasim surround a particle and package it within a vacuole.
pinocytosis tiny pockets that form around the cell membrane, fill w/ liquid, and form vacuoles w/in the cell
exocytosis the member of the vacuole surrounding the material fuses with the cell
cell specialization cells in an organism can develop in different ways to [reform different tasks
tissue group of similar cells that perform a particular function
organ tissues work together
orgam system a group of organs that work together to perform a specific function
Created by: amymaxwell
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