Test Bank for Berne and Levy Physiology, 7th Edition by Koeppen
Berne and Levy Physiology
Berne and Levy Physiology
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Berne and Levy Physiology 7th Edition Koeppen
TEST BANK
BERNE AND LEVY PHYSIOLOGY
7TH EDITION KOEPPEN
, Berne and Levy Physiology 7th Edition Koeppen
Berne and Levy Physiology 7th Edition Koeppen Test Bank
Koeppen: Berne and Levy Physiology, 7th 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 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:
,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 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 cellGis –B
ial oRf a I 85.C
mV. The intracellular and extracellular
U S N T
concentrations of several ions are indicated in the following table, as is the calculated
Nernst equilibrium potential (Ei) for each of these ions:
The cell is treated with a drug to inhibit the Na+,K+-ATPase. What would be the effect ofthis drug
on the following parameters?
Intracellular [Na+] Intracellular [K+] Cell Volume Membrane Voltage
A. Decrease Decrease Decrease Depolarize
B. Increase Decrease Increase Depolarize
C. Increase Increase Increase No change
D. Decrease Increase Decrease Hyperpolarize
E. Increase Increase Decrease Hyperpolarize
ANS: B
6. Which of the labeled proteins (shaded) is attached to the membrane by a
glycosylphosphatidylinositol (GPI) anchor?
ANS: E
7. A cell has channels for Na+, K+, and Cl– in its plasma membrane. The resting membrane
potential is –60 mV (cell interior negative). The intracellular and extracellular
concentrations for these ions, as well as the calculated Nernst potentials, are listed as
follows:
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