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equilibrium no net gain or loss of water in this environment
diffusion the gradual random spreading of molecules from an area of higher concentration to an area of lower concentration
pinocytosis bulk flow of large solutes dissolved in a solution across the membrane into a cell
osmosis the diffusion of water molecules only
hypertonic a cell environment that has a higher solute concentration and lower water concentration than the cell
facilitated diffusion movement of large solutes into or out of a cell through a protein with no energy needed
exocytosis secretion of large molecules out of the cell using transport vesicles
phagocytosis bulk flow of large solid particles or cells across the membrane into the cell; engulfing material
hypotonic a cell environment that has lower solute concentration and higher water concentration that the cell
active transport the movement of molecules through a membrane with the use of ATP
transport protein integral proteins that solutes pass through when crossing a selectively permeable membrane
concentration gradient the direction of flow (net movement) of solutes by diffusion
passive transport transport of molecules that requires no energy
sea water the Great Salt Lake, the Dead Sea hypertonic environments
tap water; fresh water lakes, rivers, and streams; distilled water hypotonic environments
isotonic a cell environment that has an equal solute and water concentration with the cells
IVs, contact wetting solutions, tissue baths isotonic environments
crenate the shrinking of animal cells when exposed to a hypertonic environment
lyse the rupturing of an animal cell when exposed to a hypotonic environment
turgid the swelling of a plant cell when exposed to a hypotonic environment; plant tissue is rigid and firm due to water pressure within the central vacuole
plasmolysis the loss of turgor pressure in a plant cell exposed to a hypertonic environment; tissue is flimsy and flexible due to loss of turgor pressure in plant cells
turgor pressure internal pressure in cells created by the absorption of water by osmosis
Created by: biobob