Physiology 7th Edition
Koeppen-latest-2023-2024
, Berne and Levy Physiology 7th Edition KoeppenTest Bank
Koeppen: Berne and Levy Physiology, 7th Edition
Chapter 01: Principles of Cell
FunctionTest Bank
Multiple Choice
1. The subcellular structure that degrades proteins is called the:
A. Tight junction
B. Mitochondria
C. Lysosome
D. Plasma membrane
E. Ribosome
ANS:t k C
2. Antkexperimenttkistkdonetktotkmeasuretkthetkuptaketkoftkantkaminotkacidtkintotkatkcell.tkThetk
followingtkdatatkaretkobtained:
N
IftkNa+tkistkremovedtkfromtkthetkextracellulartkbathingtksolution,tkortkiftkatkdrugtkistkaddedtkthattkpre
ventstkthetkcelltkfromtkmakingtkadenosinetktriphosphatetk(ATP),tkthetkuptaketkoftkaminotkacidtkint
otkthetkcelltkistkmarkedlytkreduced.tkAccordingtktotkthistkinformation,tkwhichtkoftkthetkfollowing
mechanismstkistkprobablytkresponsibletkfortkthetktransporttkoftkthetkaminot k acidtkintotkthetkcell?
A. Passivetkdiffusiontkthroughtkthetklipidtkbilayer
B. Uniporter
C. TransporttkATPase
D. Na+tksymporter
E. Na+tkantiporte
rtkANS:t k D
3. AtkmembranetkpermeabletkbytkonlytkNa+tkseparatestktwotkcompartmentstkconta
iningtkNa2SO4,showntkastkfollows:
, Electrodestkaretkplacedtkintkbothtkcompartments,tkandtkatkvoltagetkistkappliedtk(thattkoftkcompartm
enttkAtkistkheldtkattk0tkmV).tkWhattkvoltagetkappliedtktotkcompartmenttkBtkwouldtkresulttkintknotknet
+
tkmovementtkoftkNa tkacrosstkthetkmembranetkseparatingtkthetkcompartments?
A. –60tkmV
B. –30tkmV
C. 0tkmV
D. +30tkmV
E.
+60tkm
VtkANS:t k E
4. ThetkrestingtkmembranetkpotentN ce llGis tk–
ial tkoRftka I
U tkStkN
B85.C
mV.tkThetkintracellulartkandtkextracellulartkconcentrationstkoftkseveraltkionstkaretkindic
atedtkintkthetkfollowingtktable,tkastkistkthetkcalculated
Nernsttkequilibriumtkpotentialtk(Ei)tkfortkeachtkoftkthesetkions:
Ion Concentration Concentration Ei
InsidetkCell OutsidetkCell
Na+ 12tkmEq/L 145tkmEq/L 66tkmV
K+ 150tkmEq/L 4tkmEq/L –96tkmV
Cl– 30tkmEq/L 105tkmEq/L –33tkmV
Ca++ 0.0001tkmmol/dL 1tkmmol/dL 122tkmV
ThetkmembranetkhastkchannelstkfortkNa+,tkK+,tkCl–
,tkandtkCa++.tkThetkconductancetkoftkthetkmembranetkistkthetkgreatesttkfortkwhichtkion
?
A. Na+
B. K+
C. Cl–
D. Ca++tkA
NS:tkB
5. Atkcelltkcontainstkthetkfollowingtkmembranetktransporters:
Na+tkchannelK+tkchanne
ltkNa+,K+-ATPase
, Thetkrestingtkmembranetkvoltagetkoftkthetkcelltkistk–80tkmV,tkandtkthetkintracellulartkand