a twisted membrane with portions that break off to form vesicles that trnsport materials?

Question

what word goes with that??????

Answer 1

Exocytosis (cell expells particals) or endocytosis (cell takes in particles).

depends on what you are looking for. in a cell using ATP adenacine tri-phophate (cellular energy) in able to get in certain nutrience such as potassium (K+) the cell needs ATP to attach to the protein that takes in this nutrient. once the ATP attaches to the protein the protein will open letting in this nutrient. well I will give you a site to learn this that is from my college from one of my labs... hope this helps.

http://highered.mcgraw-hill.com/sites/0072437316/student_view0/chapter6/animations.html#