Test Bank For Berne and Levy Physiology 7th Edition By Bruce M. Koeppen, MD, PhD and Bruce A. Stanton, PhD 9780323393942 Chapter 1-44 Complete Guide .

Berne and Levy Physiology 7th Edition
m m m m m


Koeppen




Berne and Levy Physiology 7th Edition KoeppenTest Bank
m m m m m m m

, Berne and Levy Physiology 7th Edition
m m m m m


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




Chapter 01: Principles of Cell m m m m



FunctionTest Bank
m m



Multiple Choice m




1. The subcellular structure that degrades proteins is called the:
m m m m m m m m




A. Tight junction m



B. Mitochondria
C. Lysosome
D. Plasma membrane m



E. Ribosome
ANS: C m




2. An experiment is done to measure the uptake of an amino acid into a cell. The
m m m m m m m m m m m m m m m



following data are obtained:
m m m m




N




If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents
m m m m m m m m m m m m m m m m



mthe cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell
m m m m m m m m m m m m m m


mis markedly reduced. According to this information, which of the followingmechanisms is
m m m m m m m m m m m



mprobably responsible for the transport of the amino acid into the cell?
m m m m m m m m m m m




A. Passive diffusion through the lipid bilayer
m m m m m


B. Uniporter
C. Transport ATPase m



D. Na+ symporter m



E. Na+ antiporter
m



ANS: D
m m




3. A membrane permeable by only Na+ separates two compartments
m m m m m m m m


containing Na2SO4,shown as follows:
m m m m

,Berne and Levy Physiology 7th Edition
m m m m m


Koeppen




Electrodes are placed in both compartments, and a voltage is applied (that of compartment
m m m m m m m m m m m m m



A is held at 0 mV). What voltage applied to compartment B would resultin no net
m m m m m m m m m m m m m m m m



movement of Na+ across the membrane separating the compartments?
m m m m m m m m m




–60 mV
A. m



–30 mV
B. m


C.
0 mV m



D. +30 mV m



E. +60 mV m



ANS: E
m m




4. The resting membrane potentN ial oRf a Ic e l lGis –B
85.m
CV. The intracellular and
extracellular concentrations of U S N ions are indicated
m m m m m m mm m m m m


m several m in the following table, as is
m m
m m
m m m m m m m m m

the calculated
m m



Nernst equilibrium potential (Ei) for each of these ions:
m m m m m m m m




Ion Concentration Concentration Ei
Inside Cell m Outside Cell m



Na+ 12 mEq/Lm 145 mEq/L m 66 mV m




K+ 150 mEq/L m 4 mEq/L
m –96 mV m




Cl– 30 mEq/Lm 105 mEq/L m –33 mV m




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




The membrane has channels for Na+, K+, Cl–, and Ca++. The conductance of the
m m m m m m m m m m m m m


membrane is the greatest for which ion?
m m m m m m m




A. Na+
B. K+
C. Cl–
D. Ca++
ANS:
m



Bm




5. A cell contains the following membrane transporters:
m m m m m m




Na+ channelK+ channel
m m



Na+,K+-ATPase
m




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

, Berne and Levy Physiology 7th Edition
m m m m m


extracellular
Koeppen ion concentrations are as follows:
m m m m m




Ion Intracellular Extracellular
Concentration Concentration
Na+ 10 mEq/L
m 145 mEq/L m




K+ 120 mEq/L
m 4 mEq/L m




The cell is treated with a drug to inhibit the Na+,K+-ATPase. What would be the effect ofthis drug
m m m m m m m m m m m m m m m m m



on the following parameters?
m m m m




Intracellular [Na+] m Intracellular [K+] m Cell Volume
m Membrane Voltage
m



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



D. Decrease Increase Decrease Hyperpolarize
E. Increase Increase Decrease Hyperpolarize

ANS: B m




6. Which of the labeled proteins (shaded) is attached to the membrane by
m m m m m m m m m m m



a glycosylphosphatidylinositol (GPI) anchor?
m m m m




ANS: E m




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



membrane potential is –60 mV (cell interior negative). The intracellular and
m m m m m m m m m m m



extracellular concentrations for these ions, as well as the calculated Nernst
m m m m m m m m m m m



potentials, are listed as follows:
m m m m m