Berne & Levy Physiology – 7th Edition by Koeppen – All Chapters (1–44) – Complete Test Bank Guide (Newest Version)

, Berne and Levy Physiology 7th Edition Koeppen
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Berne and Levy Physiology 7th Edition KoeppenTest Bank Koeppe
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n: Berne and Levy Physiology, 7th Edition
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Chapter 01: Principles of Cell FunctionT 9i 9i 9i 9i 9i



est Bank 9i



Multiple Choice 9i




1. The subcellular structure that degrades proteins is called the:
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A. Tight junction 9i



B. Mitochondria
C. Lysosome
D. Plasma membrane 9i



E. Ribosome
ANS: C 9 i




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: 9i 9i




N




If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents the c
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ell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is marke
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dly reduced. According to this information, which of the followingmechanisms is probably res
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ponsible for the transport of the amino acid into the cell?
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A. Passive diffusion through the lipid bilayer 9i 9i 9i 9i 9i


B. Uniporter
C. Transport ATPase 9i



D. Na+ symporter 9i



E. Na+ antiporter9i 9



ANS: D
i 9 i




3. A membrane permeable by only Na+ separates two compartments containing
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Na2SO4,shown as follows: 9i 9i

,Berne and Levy Physiology 7th Edition Koeppen
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Electrodes are placed in both compartments, and a voltage is applied (that of compartment A is
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held at 0 mV). What voltage applied to compartment B would resultin no net movement of Na+
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across the membrane separating the compartments?
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A. –60 mV 9i



B. –30 mV 9i


C. 0 mV 9i



D. +30 mV 9i



E.
+60 mV 9i



9i ANS: E 9 i




4. The resting membrane potentN ial oRf a Ic e llGis –
USN
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B85.mCV. The intracellular and extracellular concentrations of several ions are indicated in
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the following table, 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 9i Outside Cell 9i


+
Na 12 mEq/L 9i 145 mEq/L 9i 66 mV 9i




K+ 150 mEq/L 9i 4 mEq/L
9i –96 mV 9i




Cl– 30 mEq/L 9i 105 mEq/L 9i –33 mV 9i




Ca++ 0.0001 mmol/dL 9i 1 mmol/dL
9i 122 mV 9i




The membrane has channels for Na+, K+, Cl–
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, and Ca++. The conductance of the membrane is the greatest for which ion?
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A. Na+
B. K+
C. Cl–
D. Ca++ A 9 i



NS: B 9i




5. A cell contains the following membrane transporters:
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Na+ channelK+ channel
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Na+,K+-ATPase

, Berne and Levy Physiology 7th Edition Koeppen
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The resting membrane voltage of the cell is –80 mV, and the intracellular and
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