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