Cell transport Flashcards
Hypotonic
A solution with LESS solute and MORE solvent
Hypertonic
A solution with MORE solute and LESS solvent
Isotonic
Solvent and solute concentrations are EQUAL.
Dynamic Equilibrium
Concentrations are equal but molecules are still moving.
Plant cell in hypotonic solution
Turgid (happy)
Animal Cell in Hypotonic
Lyses
Plant & Animal cells in isotonic
Flaccid (happy)
animal cell in hypertonic
Shriveled
Plant cell in hypertonic
Plasmolysed (when membrane pulls away from cell wall)
Diffusion
Movement of molecules from high concentration to low concentration
Osmosis
Movement of water down a selectively permeable membrane.
Fluid mosaic model
Selectively permeable, lets only small neutral molecules to pass through.
Facilitated diffusion
Diffusion using a channel or carrier protein.
Active transport
Transport against the concentration gradient.
Sodium-Potassium pump
Sodium goes through one way, potassium goes the other way and the each open it up for the other.