movement into and out of cell Flashcards
diffusion
the net movement of molecules or ions from a region of their higher
concentration to a region of their lower concentration
osmosis
the net movement of water molecules from a region of higher water potential to
a
region of lower water potential, through a partially permeable membrane
factor affecting diffusion
surface area
temperature
concentration gradient
distance
thickness of membrane or wall
water move in an animal cell
the cell will swell up and burst
water move out an animal cell
cytoplasm shrink and creneates
water move in a plant cell
there is turgur pressure but cell wall protect from bursting
therefore cell wall expand and become turgid
water move out plant cell
vacuole decrease in size
cytoplasm and cell membrane shrink away from cell wall (plasmolysis)
become flaccid
active transport
movement of molecule through cell membrane
against concentration gradient
require energy