8.3 (9) Flashcards
Homeostasis
Relatively constant in internal physical and chemical conditions that organisms maintain.
Diffusion
Process by which particles tend to move from an area where they are more concentrated to an area where there are less concentrated.
Facilitated diffusion
Process of diffusion in which molecules pass across the membrane through cell membrane channels.
Aquaporin
Water channel protein in a cell.
Osmosis
Diffusion of water through selectively permeable membrane.
Isotonic
Where in the concentration are two solutions is the same.
Hypertonic
When comparing to solutions, the solution with the greater concentration of solutes.
Hypotonic
When comparing to solutions, the solution with the lesser concentration of salutes.
Osmotic pressure
Pressure that must be applied to prevent osmotic movement across the selectively permeable membrane.