Berne and Levy Physiology 7th Edition Koeppen Test Bank ( Grade A+

Test Bank Berne and Levy Physiology 7th Edition Koe
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ppen-latest-2025-2026

, Berne and Levy Physiology 7th Edition Koeppen Test Bank Koeppen
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: Berne and Levy Physiology, 7th Edition
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Chapter 01: Principles of Cell FunctionTes
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t Bank
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Multiple Choice n




1. Thensubcellularnstructurenthatndegradesnproteinsnisncallednthe:

A. Tightnjunction
B. Mitochondria
C. Lysosome
D. Plasmanmembrane
E. Ribosome
ANS:n C

2. Annexperimentnisndonentonmeasurenthenuptakenofnannaminonacidnintonancell.nThenfollowingnd
atanarenobtained:


N




IfnNa+nisnremovednfromnthenextracellularnbathingnsolution,nornifnandrugnisnaddednthatnpreventsnthence
llnfromnmakingnadenosinentriphosphaten(ATP),nthenuptakenofnaminonacidnintonthencellnisnmarkedlyn
reduced.nAccordingntonthisninformation,nwhichnofnthenfollowingmechanismsnisnprobablynresponsi
blenfornthentransportnofnthenaminon acidnintonthencell?

A. Passivendiffusionnthroughnthenlipidnbilayer
B. Uniporter
C. TransportnATPase
D. Na+nsymporter
E. Na+nantiporter
nANS:n D




3. AnmembranenpermeablenbynonlynNa+nseparatesntwoncompartmentsncontainingn
Na2SO4,shownnasnfollows:

,Electrodesnarenplacedninnbothncompartments,nandnanvoltagenisnappliedn(thatnofncompartmentnAnisnh
eldnatn0nmV).nWhatnvoltagenappliedntoncompartmentnBnwouldnresultninnnonnetnmovementnofnNa+nac
rossnthenmembranenseparatingnthencompartments?

A. –60nmV
B. –30nmV
C. 0nmV
D. +30nmV
E.
+60nmV
nANS:n E




4. ThenrestingnmembranenpotentN ial noRfna I
ce l l is n–
85 m V.
UnSnN G
nThenintracellularnandnextracellularnconcentrationsnofnseveralnionsnarenindicatedninn
B.C
thenfollowingntable,nasnisnthencalculated
Nernstnequilibriumnpotentialn(Ei)nforneachnofnthesenions:

Ion Concentration Concentration Ei
InsidenCell OutsidenCell
Na+ 12nmEq/L 145nmEq/L 66nmV
K+ 150nmEq/L 4nmEq/L –96nmV
Cl– 30nmEq/L 105nmEq/L –33nmV
Ca++ 0.0001nmmol/dL 1nmmol/dL 122nmV

ThenmembranenhasnchannelsnfornNa+,nK+,nCl–
,nandnCa++.nThenconductancenofnthenmembranenisnthengreatestnfornwhichnion?

A. Na+
B. K+
C. Cl–
D. Ca++nA
NS:nB

5. Ancellncontainsnthenfollowingnmembranentransporters:




Na+nchannelK+nchanneln
Na+,K+-ATPase

, Thenrestingnmembranenvoltagenofnthencellnisn–80nmV,nandnthenintracellularnand