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21 Cards in this Set

  • Front
  • Back
lipid barrier is.........to ............
impermeable
water soluble molecules
where is concentration greater of...
-Na+
-K+
-Mg2+
-Ca2+
-H+
-Cl-
-outside
-in
-out
-out
-in
-out
Protein lipid bilayers impermeable to.......permeable to..........
-ions, large uncharged polar mole.
-water/small nonpolar molecules (O2, glycerol, ethanol)
cystinuria?
disease due to block in AA transport from intestine
all studied membrane proteins are.....
2 major classes?
multipass
1. t
.................drives transport in carrier proteins
conformation changes
active transport is mediated by.......coupled to
carrier proteins.........an energy source (ex. light or ATP)
three types of carrier mediated transport? ex?
-uniports (glucose inward transport in liver)
-symports (glucose/ Na transport in intestine/kidney)
-antiports (band 3 protein Cl- for HCO3)
which involves coupled transport?
this involves a...??
-symport and antiport
-co-transported ion
The plasma membrane Na+/K+ pump is an....
ex. of ....pump?
ATPase
-antiport
how much energy used to fuel Na/K pump?
1/3
.....makes animal cells burst
oubain
animal cells use.......to take up nutrients
Na+ gradient
some Ca2+ pumps are.....
membrane bound ATPases
where is Ca2+ conc. high? Low?
-extracellular
-low in cytosol
Ca2+ pumps found...
in PM and ER
H+ pumps found in.....
lysosome or vacuole
ion channels are...
selective transport rate?
passive
-10^6 molecules/sec
diff. gated channels? (3)
voltage
mechanical
ligand
action potential created by .....
voltage gated Na and K channels
Neuromuscular transmission involves.....gated ion channels
at least 4