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biology 3

TermDefinition
diffusion process by which particles tend to move from an area where they are more concentrated to an area where they are less concentrated
facilitated diffusion process of diffusion in which molecules pass across the membrane through cell membrane channels
aquaporin water channel in a protein cell
osmosis diffusion of water through a selectively permeable membrane
isotonic when the concentration of two solutions is the same
hypertonic when comparing two solutions, the solution with the greater concentration of solutes
hypotonic when comparing two solutions, the solution with lesser concentration of solutes
osmotic pressure pressure that must be applied to prevent osmotic movement across a selectively permeable membrane
homeostasis relatively constant internal physical and chemical conditions that organisms maintain
tissue A group of similar cells that perform a particular function
organ group of tissues that work together to perform closely related functions
organ system group of organs that work together to perform a specific function
receptor on or in a cell, a specific protein whose shape fits that of a specific molecular messenger, such as a hormone
Created by: Sharion Davis