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

Berne and Levy Physiology 7th Edition Koeppen

, Berne and Levy Physiology 7th Edition Koeppen

Berne and Levy Physiology 8th Edition KoeppenTest Bank Koep
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pen: Berne and Levy Physiology, 8th Edition
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Chapter 01: Principles of Cell Function
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Test Bank nw



Multiple Choice nw




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



B. Mitochondria
C. Lysosome
D. Plasma membrane nw



E. Ribosome
ANS: C n w




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




If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevent
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s the cell from making adenosine triphosphate (ATP), the uptake of amino acid into the c
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ell is markedly reduced. According to this information, which of the followingmechanism
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s 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 nw



D. Na+ symporter nw



E. Na+ antiporternw



ANS: D
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3. A membrane permeable by only Na+ separates two compartments containi
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ng Na2SO4,shown as follows:
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,Berne and Levy Physiology 7th Edition Koeppen




Electrodes are placed in both compartments, and a voltage is applied (that of compartment
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A is held at 0 mV). What voltage applied to compartment B would resultin no net move
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ment of Na+ across the membrane separating the compartments?
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A. –60 mV nw



B. –30 mV nw


C. 0 mV nw



D. +30 mV nw



E.
+60 m nw



V ANS: E nw n w




4. The resting membrane potentN ial oRf a Ic e l lGis –
U S N
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B85.m
CV. The intracellular and extracellular concentrations of several ions are indicate
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d 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 nw Outside Cell nw


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




K+ 150 mEq/L nw 4 mEq/L
nw –96 mV nw




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




Ca++ 0.0001 mmol/dL nw 1 mmol/dL
nw 122 mV nw




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++ n w



ANS: nw


B

5. A cell contains the following membrane transporters:
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Na+ channelK+ channe
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l Na+,K+-ATPase
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, Berne and Levy Physiology 7th Edition Koeppen

The resting membrane voltage of the cell is –80 mV, and the intracellular and
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