BESTLEC
Test Bank
Berne & Levy Physiology 8th Edition
by Bruce M. Koeppen, Bruce A. Stanton, Julianne M Hall, Agnieszka Swiatecka-Urban
All Chapters-Latest Edition- ISBN-13 978-0323847902
C
LE
ST
BE
1
, BESTLEC
Chapter 01: Principles of Cell Function
Multiple Choice
1. The subcellular structure that degrades proteins is called the:
A. Tight junction
B. Mitochondria
C. Lysosome
D. Plasma membrane
E. Ribosome
Answer: C
C
2. An experiment is done to measure the uptake of an amino acid into a cell. The following
data are obtained: LE
N
ST
BE
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 following mechanisms 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
Answer: D
2
, BESTLEC
3. A membrane permeable by only Na+ separates two compartments containing Na2SO4,
shown as follows:
C
LE
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?
ST
A. –60 mV
B. –30 mV
BE
C. 0 mV
D. +30 mV
E. +60 mV
Answer: E
4. The resting membrane potential of ace is –B85. CmV. The intracellular and extracellular
concentrations of several ions are indicated in the following table, as is the calculated
Nernst equilibrium potential (Ei) for each of these ions:
Ion Concentration
3
, BESTLEC
Inside Cell Concentration
Outside Cell Ei
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?
C
A. Na+
B. K+ LE
C. Cl–
D. Ca++
ST
Answer: B
5. A cell contains the following membrane transporters:
BE
Na+ channel K+ channel Na+, K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
extracellular ion concentrations are as follows:
Ion Intracellular
Concentration Extracellular
Concentration
Na+ 10 mEq/L 145 mEq/L
4
Test Bank
Berne & Levy Physiology 8th Edition
by Bruce M. Koeppen, Bruce A. Stanton, Julianne M Hall, Agnieszka Swiatecka-Urban
All Chapters-Latest Edition- ISBN-13 978-0323847902
C
LE
ST
BE
1
, BESTLEC
Chapter 01: Principles of Cell Function
Multiple Choice
1. The subcellular structure that degrades proteins is called the:
A. Tight junction
B. Mitochondria
C. Lysosome
D. Plasma membrane
E. Ribosome
Answer: C
C
2. An experiment is done to measure the uptake of an amino acid into a cell. The following
data are obtained: LE
N
ST
BE
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 following mechanisms 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
Answer: D
2
, BESTLEC
3. A membrane permeable by only Na+ separates two compartments containing Na2SO4,
shown as follows:
C
LE
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?
ST
A. –60 mV
B. –30 mV
BE
C. 0 mV
D. +30 mV
E. +60 mV
Answer: E
4. The resting membrane potential of ace is –B85. CmV. The intracellular and extracellular
concentrations of several ions are indicated in the following table, as is the calculated
Nernst equilibrium potential (Ei) for each of these ions:
Ion Concentration
3
, BESTLEC
Inside Cell Concentration
Outside Cell Ei
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?
C
A. Na+
B. K+ LE
C. Cl–
D. Ca++
ST
Answer: B
5. A cell contains the following membrane transporters:
BE
Na+ channel K+ channel Na+, K+-ATPase
The resting membrane voltage of the cell is –80 mV, and the intracellular and
extracellular ion concentrations are as follows:
Ion Intracellular
Concentration Extracellular
Concentration
Na+ 10 mEq/L 145 mEq/L
4
