1
en
,BernevbandvbLevyvbPhysiologyvb7thvbEdition Koepp
1
en
,BernevbandvbLevyvbPhysiologyvb7thvbEdition Koepp
1
en
, BernevbandvbLevyvbPhysiologyvb7thvbEdition Koepp
1
Chaptervb01:vbPrinciplesofvbCellvbFunctionTe
en
stvbBankvbMultip
levbChoice
1. Thevbsubcellularvbstructurevbthatvbdegradesvbproteins isvbcalled the:
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A. Tightvbjunction
B. Mitochondria
C. Lysosome
D. Plasmavbmembrane
E. Ribosome
ANS:v b C
2. Anvbexperimentvbis done tomeasurevbtheuptakevbofvbanvbaminovbacidvbintovbavbcell.vbThevbfollowin
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gvbdatvba arevbobtained:
1
N
IfvbNa+vbisvbremovedvbfromvbthevbextracellularvbbathingvbsolution,vborvbifvbavbdrugvbisvbaddedvbthatvbprevent
svbthevbcellvbfromvbmaking adenosinevbtriphosphatevb(ATP),vbthevbuptakevbofvbaminovbacid intovbthevbcel
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lvbisvbmarkedlyvbredvbuced.vbAccordingvbtovbthisvbinformation,vbwhich ofvbthevbfollowingmechanismsvbi
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svbprobablyvbresponsible fvborvbthevbtransportvbofvbthevbaminovbacid intovbthevbcell?
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A. Passivevbdiffusionvbthroughvbthevblipidvbbilayer
B. Uniporter
C. TransportvbATPase
D. Na+vbsymporter
E. Na+antiporter
vbANS:vbD
3. AmembranepermeablebyonlyvbNa+vbseparatestwovbcompartmentsvbcontainingv b N
1
a2SO4,shownvbasvbfollows: