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Plasma membrane
diverse mosaic-
know diagram
facilitated diffusion
need a middleman to help diffusion occur- transport proteins act as helper for FD
each protein will only transport a specific molecule needs energy to occur (ATP)
aquaporins
channel within membrane that let water through the plasma membrane
why is water polar
because of its electronegativity between hydrogen and oxygen (electrons are shared unequally)
exocytosis
expelling material and particles out of a cell
endocytosis
THREE TYPES:
phagocytosis- when an amoeba engulfs a particle by extending a false foot and dragging it into the cell membrane for the lysosome to break down to be able to diffuse
pinocytosis- when an amoeba physically indents and any liquid around it gets sucked in and is trapped by the membrane- to diffuse through membrane
receptor-mediated endocytosis
- when membrane surface has receptors that react to specific enzymes and drag them into membrane
osmosis and osmoregulate
movement of water in cell
osmoregulation-
solute binding
wh
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