Test Bank Berne and Levy Physiology 7th Edition
Koeppen-latest-2025-2026
, Berne and Levy Physiology 7th Edition Koeppen Test 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: C
2. An experiment is done to measure the uptake of an amino acid into a cell. The following
data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents the
cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is
markedly reduced. According to this information, which of the followingmechanisms is
probably responsible for the transport of the amino acid into the cell?
A. Passive diffusion through the lipid bilayer
B. Uniporter
C. Transport ATPase
D. Na+ symporter
E. Na+ antiporter
ANS: D
3. A membrane permeable by only Na+ separates two compartments containing
Na2SO4,shown as follows:
,Electrodes are placed in both compartments, and a voltage is applied (that of compartment A is
held at 0 mV). What voltage applied to compartment B would result in no net movement of Na+
across the membrane separating the compartments?
A. –60 mV
B. –30 mV
C. 0 mV
D. +30 mV
E. +60 mV
ANS: E
4. The resting membrane potentN
S ceNllGisin–B85
ial oRfa I
U indicated
concentrations of several ions are
.CmV. The intracellular and extracellular
the following table, as is the calculated
Nernst equilibrium potential (Ei) for each of these ions:
Ion Concentration Concentration Ei
Inside Cell Outside Cell
Na+ 12 mEq/L 145 mEq/L 66 mV
K+ 150 mEq/L 4 mEq/L –96 mV
Cl– 30 mEq/L 105 mEq/L –33 mV
Ca++ 0.0001 mmol/dL 1 mmol/dL 122 mV
The membrane has channels for Na+, K+, Cl–, and Ca++. The conductance of the
membrane is the greatest for which ion?
A. Na+
B. K+
C. Cl–
D. Ca++
ANS: B
5. A cell contains the following membrane transporters:
Na+ channelK+ channel
Na+,K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
, extracellular aion aconcentrations aare aas afollows:
Ion Intracellular Extracellular
Concentration Concentration
Na+ 10 amEq/L 145 amEq/L
K+ 120 amEq/L 4 amEq/L
The acell ais atreated awith aa adrug ato ainhibit athe aNa+,K+-ATPase. aWhat awould abe athe aeffect aofthis
adrug aon athe afollowing aparameters?
Intracellular a[Na+] Intracellular a[K+] Cell aVolume Membrane aVoltage
A. Decrease Decrease Decrease Depolarize
B. Increase Decrease Increase Depolarize
C. Increase Increase Increase No achange
D. Decrease Increase Decrease Hyperpolarize
E. Increase Increase Decrease Hyperpolarize
ANS: a B
6. Which aof athe alabeled aproteins a(shaded) ais aattached ato athe amembrane
aby aa aglycosylphosphatidylinositol a(GPI) aanchor?
ANS: a E
7. A acell ahas achannels afor aNa+, aK+, aand aCl– ain aits aplasma amembrane. aThe aresting
amembrane apotential ais a–60 amV a(cell ainterior anegative). aThe aintracellular aand
aextracellular aconcentrations afor athese aions, aas awell aas athe acalculated aNernst
apotentials, aare alisted aas afollows:
Koeppen-latest-2025-2026
, Berne and Levy Physiology 7th Edition Koeppen Test 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: C
2. An experiment is done to measure the uptake of an amino acid into a cell. The following
data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents the
cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is
markedly reduced. According to this information, which of the followingmechanisms is
probably responsible for the transport of the amino acid into the cell?
A. Passive diffusion through the lipid bilayer
B. Uniporter
C. Transport ATPase
D. Na+ symporter
E. Na+ antiporter
ANS: D
3. A membrane permeable by only Na+ separates two compartments containing
Na2SO4,shown as follows:
,Electrodes are placed in both compartments, and a voltage is applied (that of compartment A is
held at 0 mV). What voltage applied to compartment B would result in no net movement of Na+
across the membrane separating the compartments?
A. –60 mV
B. –30 mV
C. 0 mV
D. +30 mV
E. +60 mV
ANS: E
4. The resting membrane potentN
S ceNllGisin–B85
ial oRfa I
U indicated
concentrations of several ions are
.CmV. The intracellular and extracellular
the following table, as is the calculated
Nernst equilibrium potential (Ei) for each of these ions:
Ion Concentration Concentration Ei
Inside Cell Outside Cell
Na+ 12 mEq/L 145 mEq/L 66 mV
K+ 150 mEq/L 4 mEq/L –96 mV
Cl– 30 mEq/L 105 mEq/L –33 mV
Ca++ 0.0001 mmol/dL 1 mmol/dL 122 mV
The membrane has channels for Na+, K+, Cl–, and Ca++. The conductance of the
membrane is the greatest for which ion?
A. Na+
B. K+
C. Cl–
D. Ca++
ANS: B
5. A cell contains the following membrane transporters:
Na+ channelK+ channel
Na+,K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
, extracellular aion aconcentrations aare aas afollows:
Ion Intracellular Extracellular
Concentration Concentration
Na+ 10 amEq/L 145 amEq/L
K+ 120 amEq/L 4 amEq/L
The acell ais atreated awith aa adrug ato ainhibit athe aNa+,K+-ATPase. aWhat awould abe athe aeffect aofthis
adrug aon athe afollowing aparameters?
Intracellular a[Na+] Intracellular a[K+] Cell aVolume Membrane aVoltage
A. Decrease Decrease Decrease Depolarize
B. Increase Decrease Increase Depolarize
C. Increase Increase Increase No achange
D. Decrease Increase Decrease Hyperpolarize
E. Increase Increase Decrease Hyperpolarize
ANS: a B
6. Which aof athe alabeled aproteins a(shaded) ais aattached ato athe amembrane
aby aa aglycosylphosphatidylinositol a(GPI) aanchor?
ANS: a E
7. A acell ahas achannels afor aNa+, aK+, aand aCl– ain aits aplasma amembrane. aThe aresting
amembrane apotential ais a–60 amV a(cell ainterior anegative). aThe aintracellular aand
aextracellular aconcentrations afor athese aions, aas awell aas athe acalculated aNernst
apotentials, aare alisted aas afollows:
