membrane proteins Flashcards
what does the plasma membrane serve as?
physical barrier between cell and fluid that surround it (interstitial fluid)
what does the plasma membrane regulate?
movement in and out of the cell
what does the plasma membrane establish and maintain?
establishes and maintains electrochemical gradient
what does the plasma membrane function in?
cell communication
membrane transport is the process of what?
obtaining and eliminating substance across plasma membrane
what are the 2 categories of membrane transport?
passive processes and active processes
(passive processes of membrane transport)
do passive processes of membrane transport require energy?
passive processes of membrane transport do not require energy
(passive processes of membrane transport)
what do passive processes of membrane transport depend on?
passive processes of membrane transport depend on substances moving down concentration gradient, moving from 1 area of more substance to area of less
what are the 2 types of passive processes of membrane transport?
diffusion and osmosis
active processes of membrane transport
do active processes of membrane transport require energy?
active processes of membrane transport require energy
active processes of membrane transport
what do passive processes of membrane transport depend on?
substance must be moved up its concentration gradient (active transport)
active processes of membrane transport
what must be released?
membrane-bound vesicle must be released
vesicular transport
