Movement of substance Flashcards
Diffusion
Movement of molecules from a region of high concentration to a region of low concentration along a concentration gradient
Active tranport
Same as diffusion but uses energy in form of ATP
Goes against concentration gradient
Permeable
Everything goes in and out freely
Impermeable
Nothing is let in/ out
Osmosis
Movement of water across a semi=permeable from a region of high water concentration to region of low water concentration
No energy required
Osmoregulation
Kidneys make sure the fluid in our bodies that surrounds our cells has a stable concentration
Turgid
Water makes vacuole bigger and cytoplasm swells cell membrane pushed out towards cell wall
Plasmolysis
Movement o cell membrane away from the cell wall
Cell wall stays intact but membrane shrivels up away from it