Test Bank - Berne and Levy Physiology, 8th Edition (Koeppen, 2024), Chapter 1-44 | All Chapters.

Berne and Levy Physiology 8th Edition Koepp
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Berne and Levy Physiology 8th Edition KoeppenTest Bank Koeppen: Bern
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e and Levy Physiology, 8th Edition
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Chapter 01: Principles of Cell Function
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Test Bank TV



Multiple Choice TV
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1. The subcellular structure that degrades proteins is called the:
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A. Tight junction TV



B. Mitochondria
C. Lysosome
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D. Plasma membrane TV


E. Ribosome
ANS: C T V




2. An experiment is done to measure the uptake of an amino acid into a cell. The foll
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owing data are obtained:
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If Na+ is removed from the extracellular bathing solution, or if a drug is added that preve
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nts the cell from making adenosine triphosphate (ATP), the uptake of amino acid into th
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e cell is markedly reduced. According to this information, which of the followingmechan
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b
isms is probably responsible for the transport of the amino acid into the cell?
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A. Passive diffusion through the lipid bilayer
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B. Uniporter
C. Transport ATPase TV



D. Na+ symporter TV



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



B. –30 mV TV


C. 0 mV TV



D. +30 mV TV



E.
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+60 m TV



V ANS: E
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4. The resting membrane potentN ial oRf a Ic e l lGis –
USN
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B85.m
CV. The intracellular and extracellular concentrations of several ions are indicat
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ed in 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 TV Outside Cell TV


+
Na 12 mEq/L TV 145 mEq/L
TV 66 mVTV




K+ 150 mEq/L TV 4 mEq/L
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Cl– 30 mEq/L TV 105 mEq/L
TV –33 mV TV




Ca++ 0.0001 mmol/dL TV 1 mmol/dL
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The membrane has channels for Na+, K+, Cl–
b
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, and Ca++. The conductance of the membrane is the greatest for which ion
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?
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A. Na+
B. K+
C. Cl–
D. Ca++ T V



ANS: TV


B

5. A cell contains the following membrane transporters:
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Na+ channelK+ channe
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, Berne and Levy Physiology 8th Edition Koepp
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l Na+,K+-ATPase
en
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The resting membrane voltage of the cell is –80 mV, and the intracellular and
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