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Chapter 7 vocab

vocabulary words on chapter 7

cell membrane thin, flexible barrier around a cell; regulates what enters and leaves the cell
cell wall strong supporting layer around the cell membrane in plants, algae, and some bacteria
lipid bilayer double-layered sheet that forms the core of nearly all cell membranes
diffusion process by which molecules tend to move from an area where they are more concentrated to an area when they are less concentrated
equilibrium when the concentration of solute is the same throughout the solution
osmosis diffusion of water through a selectively permeable membrane
isotonic when the concentrations of two solutions are the same
hypertonic when comparing two solutions, the solution with the greater concentration of solutes
hypotonic when comparing two solutions, the solution with the lesser concentration of solutes
facilitated diffusion movement of specific molecules across cell membranes through protein channels
active transport energy requiring process that moves materials across a cell membrane against a concentration difference
endocytosis process by which a cell takes material into the cell by in-folding of the cell membrane
phagocytosis process in which extensions of cytoplasm surround and engulf large particles and take them into the cell
pinocytosis process by which a cell takes in liquid from the surrounding environment
exocytosis process by which a cell releases large amounts of material
Created by: Tyl3r10959