cell transportation Flashcards
permeable
membrane allows stubstances to pass thru
selectiveley permiable
only allows selective things to come thru
molecules cant passed thru if
too big, strongly charged
passive transport
molecues passing thru without the use of energy
active transport
energy is needed to pass thru, uses pumped
three types of passive transport
diffussion
osmosis
facilitated diffusion
diffusion
move from HIGH to low cocentration
molecules move down
equilibrium
particles pass thru cell without added energy
particles moving back and forth
isotonic
concentration on each side of the membrane is the same
hypertonic
“above strength” solution has higher solute concentration than the cell
hypotonic
“below strength” solution has lower solute concentration than the cell
osmosis
diffusion of water
water can always go thru membrane
facilitated diffusion
when protein helps molecules defuse
ion chanel
transports protiens with polor pore
type of ion channel
channel protien, carrier protien
proton pump
protons are pumped across membrane from low to high cocentration
sodium potassium pump
pumps sodium out while potassium is pumped in
endocytosis
moves substances into the cell
exocytosis
moves substances out of cell
pinocytosis
type of endocytosis
encloses fluid to bring into cell
