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transports across cell membrane (active(atp) (eg Na+K+ pump (ATP break…
transports across cell membrane
passive(no energy required)
osmosis(mvmt of solvent from area of higher conc to lower conc)
diffuses across semi-permeable membrane
membrane
diffusion(mvmt of solute from area of higher conc to lower conc down conc gradient)
simple(diffuse directly thru membrane)
facilitated(diffuse thru protein carrier)
no membrane
filtration(mvmt of soln thru semipermeable membrance from area of high pressure to low pressure
membrane
active(atp)
energy expended
against conc gradient(mvmt of molecules across membrane from region of THEIR lower conc to higher conc)
ATP driven(mitochondria produced)
eg Na+K+ pump
ATP break down to ADP, energy released, needed to drive AT
vesicular(atp)
across cell AND intracellular
endocytosis
engulf materials to be ingested
particulate: phagocytosis eg VS fuse w lysosome
liq: pinocytosis
exocytosis
SV fuse w cell membrane to release contents to extracellular
diffs
d no membrane, o and f have membrane
d solute o solvent f soln
d,o higher to lower conc f higher to lower pressure
overall diffs
p,a across cell v across cell and intracellular