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31 Cards in this Set

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Diffusion
movement of any molecule from more to less across a concentration gradient.
Osmosis
water through semi-permeable membrane
hypotonic
"under" - less solute, more water
hypertonic
"over" - more solute, less water
isotonic
same
role of osmosis
-tugor
-plasmolysis
-crenation
-cytolysis
-contractile vacuole
other transport
passive - no energy
active - use energy

carrier transport
facilitated diffusion
active transport
Sodium-potassium pum (nerve conduction)
gated channels - (Calcium-muscle contraction)
endocytosis-phagocytosis-solids
-pinocytosis-liquids
exocytosis
Connections between cells
Animals-tight Plant-plasmodesmata
-desmosomes
-gap
carbon markers
cell recognition - heart, blood types, immune reactions.
semipermeable
certain things can go through, but not others.
based on:size-charge-solubility in membrane
what will non-polar hydrophobic molecules do to the membrane?
they will dissolve the membrane and cross with ease, like alcohol.
what will polar hydrophillic molecules do to the membrane?
they will pass if small, like water and carbon dioxide. larger molecules will not. glucose does not pass easily.
transport proteins
protein molecules that serve as channels through the membrane. If molecules can't pass through proteins, then they must pass through phospholipids.
uniport
"one way street"
symport
two things, still one way street
antiports
regular street; passes both ways
concentration gradient
the difference between one area of solute and another. movement is a passive process. no energy involved.
hyperosmotic
solute "over" - more solute, less water
hyposmotic
"under" less solute, more water
isosomotic
equal
crenation
shriveling of animal cells - lose water
plasmolysis
shriveling of plant cells - lose water
tugid
stiffness in plants
flaccid
limp plant cell
lysed
ruptured
active transport
3 sodiums in, 2 potassiums out - ATP cycle - nerve conduction, photosynthesis.
endocytosis
to take in
phagocytosis
to take in - solids
pinocytosis
to take in - liquids
lygans
allow things to come in
exocytosis
to release