,Berne and Levy Physiology 8th Edition KoeppenTest Bank Koeppen: Bern
e and Levy Physiology, 8th Edition
Chapter 01: Principles of Cell Function
Test 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 foll
owing data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that preve
nts the cell from making adenosine triphosphate (ATP), the uptake of amino acid into th
e cell is markedly reduced. According to this information, which of the followingmechan
isms 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 contain
ing Na2SO4,shown as follows:
,Electrodes are placed in both compartments, and a voltage is applied (that of compartme
nt A is held at 0 mV). What voltage applied to compartment B would resultin no net mo
vement of Na+ across the membrane separating the compartments?
A. –60 mV
B. –30 mV
C. 0 mV
D. +30 mV
E.
+60 m
V ANS: E
4. The resting membrane potentN
TV ial oRf a Ic e l lGis –
B85.m U S N concentrations of several ions are indicat
CV. The intracellular and extracellular
ed in 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+ channe
, l Na+,K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
e and Levy Physiology, 8th Edition
Chapter 01: Principles of Cell Function
Test 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 foll
owing data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that preve
nts the cell from making adenosine triphosphate (ATP), the uptake of amino acid into th
e cell is markedly reduced. According to this information, which of the followingmechan
isms 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 contain
ing Na2SO4,shown as follows:
,Electrodes are placed in both compartments, and a voltage is applied (that of compartme
nt A is held at 0 mV). What voltage applied to compartment B would resultin no net mo
vement of Na+ across the membrane separating the compartments?
A. –60 mV
B. –30 mV
C. 0 mV
D. +30 mV
E.
+60 m
V ANS: E
4. The resting membrane potentN
TV ial oRf a Ic e l lGis –
B85.m U S N concentrations of several ions are indicat
CV. The intracellular and extracellular
ed in 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+ channe
, l Na+,K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
