TEST BANK FOR Berne & Levy Physiology 8th Edition by Bruce M. Koeppen, Bruce A. Stanton, Julianne M. Hall & Agnieszka Swiatecka-Urban , ISBN: 9780323847902 Chapters 1-44 |All Chapters Verified| Guide A+

Berne and Levy Physiology 7th Edition KoeppenTest Bank
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, Koeppen: Berne and Levy Physiology, 7th Edition h1 h1 h1 h1 h1 h1




Chapter 01: Principles of Cell h1 h1 h1 h1



FunctionTest Bank
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Multiple Choice h1




1. The subcellular structure that degrades proteins is called the:
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A. Tight junction h1



B. Mitochondria
C. Lysosome
D. Plasma membrane h1



E. Ribosome
ANS: C

2. An experiment is done to measure the uptake of an amino acid into a cell. The
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following data are obtained:
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N




If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents
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the cell from making adenosine triphosphate (ATP), the uptake of amino acid into the
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cell is markedly reduced. According to this information, which of the
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followingmechanisms is probably responsible for the transport of the amino acid into
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the cell?
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A. Passive diffusion through the lipid bilayer h1 h1 h1 h1 h1


B. Uniporter
C. Transport ATPase h1



D. Na+ symporter h1



E. Na+antiporter
ANS: D
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3. Amembrane permeable byonly Na+ separatestwo compartments
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containing Na2SO4,shown as follows:
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,Electrodes are placed in both compartments, and a voltage is applied (that of
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compartment A is held at 0 mV). What voltage applied to compartment B would
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resultin no net movement of Na+ across the membrane separating the compartments?
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–60 mV
A. h1



–30 mV
B. h1


C.
0 mV h1



D. +30 mV h1


E. +60mV
ANS: E h 1 h 1




4. The restingmembrane potentNial oRf a Ic ellGis –B
h1 85.mCV. The intracellular and h1 h1 h1 h1 h 1 h 1 h1 h1


extracellular concentrations ofUseveral
h1
SN ions are indicated in the following table,
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1
h 1
h
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as is the calculated
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Nernst equilibrium potential (Ei) for each of these ions:
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Ion Concentration Concentration Ei
Inside Cell h1 Outside Cell h1


+
Na 12 mEq/L h1 145 mEq/L h1 66 mV h1



K+ 150 mEq/L h1 4 mEq/L h1 –96 mV h1




Cl– 30 mEq/L h1 105 mEq/L h1 –33 mV h1



Ca++ 0.0001 mmol/dL h1 1 mmol/dLh1 122 mV h1




The membrane has channels for Na+, K+, Cl–, and Ca++. The conductance of the
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membrane is the greatest for which ion?
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A. Na+
B. K+
C. Cl–
D. Ca++
AN h 1



S:
B

5. A cell contains the following membrane transporters:
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Na+channelK+channel
1
h h1



Na+,K+-ATPase
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The resting membrane voltage of the cell is –80 mV, and the intracellular and
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, extracellular ion concentrations are as follows:
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Ion Intracellular Extracellular
Concentration Concentration
Na+ 10 mEq/L h1 145 mEq/L h1



K+ 120 mEq/L h1 4 mEq/L h1




The cell is treated with a drug to inhibit the Na+,K+-ATPase. What would be the effect ofthis drug on
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the following parameters?
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Intracellular [Na+] h1 Intracellular [K+] h1 Cell Volumeh1 Membrane Voltage h1



A. Decrease Decrease Decrease Depolarize
B. Increase Decrease Increase Depolarize
C. Increase Increase Increase No change
h1



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
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a glycosylphosphatidylinositol (GPI) anchor?
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ANS: E


7. A cell has channels for Na+, K+, and Cl– in its plasma membrane. The resting
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h 1
h1 h1 h1 h1 h1


membrane potential is –60 mV (cell interior negative). The intracellular and
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extracellular concentrations for these ions, as well as the calculated Nernst
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potentials, are listed as follows:
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