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Biology Flashcards

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4918646733diffusionparticles tend to move from area of high concentration to area of lower concentration0
4918650661facilitated diffusionmolecules that can't directly diffuse accross the membrane pass through special protein channels1
4918650675aquaporinscells contain water channels, proteins that allow water to pass through them2
4918652819osmosisthe diffusion of water through a selectively permeable membrane3
4918665832isotonic2 solutions that have same strength (osmotic pressure) - no change4
4918682829hypotoniccauses cell to burst - when comparing 2 solutions, the solution with the lesser concentration of solutes5
4918688431hypertonicabove strength - the solution with the greater concentration of solutes6
4918808771osmotic pressuredriven by difference in solution concentration - the net movement of water in or out of cell7
4918819951homeostasisrelatively constant internal physical and chemical conditions that organisms maintain8
4918838432tissuegroups of similar cells that perform a particular function9
4918840986organgroup of tissues that work together to perform (stomach)10
4918848341organ systemgroup of organs that work together (digestive, respiratory)11
4918855866receptoron or in a cell, a specific protein to whose shape fits that of a specific molecular messenger, such as a hormone12
4918881300endocytosisa type of active transport that moves a substance by a vesicle to the inside of the cell13
4918883043exocytosisa type of active transport that moves a substance by a vesicle to the outside of the cell14
4918897929equilibriumconcentration of a substance is equal through out space15
4918906004concentration gradientdifference in the concentration of a substance across a space16
4918913511active transportthis type of transport is the movement of a substance against the substances concentration gradient17
4918923291carrier proteinprotein used to transport specific substance across the plasma membrane18
4918934944ion channeltransport protein through which only ions can pass19

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