1
,BernefgandfgLevyfgPhysiologyfg7thfgEdition Koeppen
1
,BernefgandfgLevyfgPhysiologyfg7thfgEdition Koeppen
1
, BernefgandfgLevyfgPhysiologyfg7thfgEdition Koeppen 1
Chapter 01: Principlesof Cell FunctionTe
gf gf gf fg
st Bank Multipl
fg fg
e Choice
fg
1. Thefgsubcellularfgstructurefgthatfgdegradesfgproteins isfgcalled the:
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A. Tightfgjunction
B. Mitochondria
C. Lysosome
D. Plasmafgmembrane
E. Ribosome
ANS:f g C
2. Anfgexperimentfgis done tomeasurefgtheuptakefgoffganfgaminofgacidfgintofgafgcell.fgThefgfollowingfgdatf
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ga arefgobtained:
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N
IffgNa+fgisfgremovedfgfromfgthefgextracellularfgbathingfgsolution,fgorfgiffgafgdrugfgisfgaddedfgthatfgpreventsfgthefgc
ellfgfromfgmaking adenosinefgtriphosphatefg(ATP),fgthefguptakefgoffgaminofgacid intofgthefgcellfgisfgmarkedl
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yfgredfguced.fgAccordingfgtofgthisfginformation,fgwhich offgthefgfollowingmechanismsfgisfgprobablyfgresp
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onsible ffgorfgthefgtransportfgoffgthefgaminofgacid intofgthefgcell?
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A. Passivefgdiffusionfgthroughfgthefglipidfgbilayer
B. Uniporter
C. TransportfgATPase
D. Na+fgsymporter
E. Na+antiporterf
gANS:fgD
3. AmembranepermeablebyonlyfgNa+fgseparatestwofgcompartmentsfgcontainingf g N
1
a2SO4,shownfgasfgfollows: