Berne and Levy Physiology 7th Edition Koeppen
, Berne and Levy Physiology 7th Edition Koeppen
Berne and Levy Physiology 8th Edition KoeppenTest Bank Koep
pen: Berne 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 follo
wing data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevent
s the cell from making adenosine triphosphate (ATP), the uptake of amino acid into the c
ell is markedly reduced. According to this information, which of the followingmechanism
s 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 containi
ng Na2SO4,shown as follows:
,Berne and Levy Physiology 7th Edition Koeppen
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 resultin no net move
ment 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 ial oRf a Ic e l lGis –
B.C
85 m V. The intracellular and U S
extracellular
nw concentrations of several ions are indicate
d 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
, Berne and Levy Physiology 7th Edition Koeppen
The resting membrane voltage of the cell is –80 mV, and the intracellular and
, Berne and Levy Physiology 7th Edition Koeppen
Berne and Levy Physiology 8th Edition KoeppenTest Bank Koep
pen: Berne 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 follo
wing data are obtained:
N
If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevent
s the cell from making adenosine triphosphate (ATP), the uptake of amino acid into the c
ell is markedly reduced. According to this information, which of the followingmechanism
s 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 containi
ng Na2SO4,shown as follows:
,Berne and Levy Physiology 7th Edition Koeppen
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 resultin no net move
ment 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 ial oRf a Ic e l lGis –
B.C
85 m V. The intracellular and U S
extracellular
nw concentrations of several ions are indicate
d 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
, Berne and Levy Physiology 7th Edition Koeppen
The resting membrane voltage of the cell is –80 mV, and the intracellular and
