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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, ff Koeppen: Berne and Levy Physiology, 7th Edition ff ff ff ff ff ff




Chapter 01: Principles of Cell ff ff ff ff



FunctionTest Bank
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Multiple Choice ff




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



B. Mitochondria
C. Lysosome
D. Plasma membrane ff



E. Ribosome
ANS: C f f




2. An experiment is done to measure the uptake of an amino acid into a cell. The following
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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 the
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cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is
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markedly reduced. According to this information, which of the followingmechanisms is
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probably responsible for the transport of the amino acid into the cell?
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A. Passive diffusion through the lipid bilayer ff ff ff ff ff


B. Uniporter
C. Transport ATPase ff



D. Na+ symporter ff



E. Na+ antiporter f



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



–30 mV
B. ff


0 mV C. ff



D. +30 mV ff



E. +60 mV ff



ANS: E
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4. The resting membrane potentN ial oRf aIc e llGis –B
85.m
CV. The intracellular and
U S Nions are indicated
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extracellular concentrations of several
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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 ff Outside Cell ff



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




K+ 150 mEq/L ff 4 mEq/Lff –96 mV ff




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




Ca++ 0.0001 mmol/dL ff 1 mmol/dL
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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++
ANS: f f



B ff




5. A cell contains the following membrane transporters:
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Na+ channelK+ channel
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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 ff 145 mEq/L ff




K+ 120 mEq/L ff 4 mEq/L ff




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+] ff Intracellular [K+] ff Cell Volume
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A. Decrease Decrease Decrease Depolarize
B. Increase Decrease Increase Depolarize
C. Increase Increase Increase No change
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D. Decrease Increase Decrease Hyperpolarize
E. Increase Increase Decrease Hyperpolarize

ANS: f f B

6. Which of the labeled proteins (shaded) is attached to the membrane by a
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glycosylphosphatidylinositol (GPI) anchor?
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ANS: E f f




7. A cell has channels for Na+, K+, and Cl– in its plasma membrane. The resting membrane
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potential is –60 mV (cell interior negative). The intracellular and extracellular
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concentrations for these ions, as well as the calculated Nernst potentials, are listed
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as follows:
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