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Test Bank: Understanding Pathophysiology, 7th Edition by Sue E. Huether - Chapters 1-44
Test Bank: Understanding Pathophysiology, 7th Edition by Sue E. Huether - Chapters 1-44
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,Chapteri1.iCellulariBiologyMULTIPLEiCHOICE
1. Aistudentiisiobservingiaicelliunderitheimicroscope.iItiisiobserveditoihaveisupercoilediDNAiwi
thihistones.iWhichiofitheifollowingiwouldialsoibeiobservedibyitheistudent?
a. Aisingleicircularichromosome
b. Ainucleus
c. Free-floatinginuclearimaterial
d. Noiorganelles
ANS:iB
Theicellidescribediisiaieukaryoticicell,isoiitihasihistonesiandiaisupercoilediDNAiwithiniitsinucleus
;ithus,itheinucleusishouldibeiobserved.
Aisingleicircularichromosomeiisicharacteristiciofiprokaryoticicells,iwhichidoinotihaveihistones.
Free-
floatinginuclearimaterialidescribesiaiprokaryoticicell,iwhichiwouldinotihaveiaidistinctinucleus.
Eukaryoticicellsihaveimembraneiboundedicellularicomponentsicallediorganelles.iNoiorganellesidescrib
esiaiprokaryoticicell.
2. Ainurseiisiinstructingitheistaffiabouticellularifunctions.iWhichicellularifunctioniisitheinurseide
scribingiwhenianiisolatedicelliabsorbsioxygeniandiusesiititoitransforminutrientsitoienergy?
a. Metaboliciabsorption
b. Communication
c. Secretion
d. Respiration
,ANS:iD
Theiabilityiofitheicellitoiabsorbioxygenirefersitoitheicellsifunctioniofirespiration.
Theiabilityiofitheicellitoifunctioniwithiniaisocietyioficellsirefersitoi itsifunctionioficommunication.
Theiabilityiofitheicellitoitakeiininutrientsirefersitoitheicellsifunctioniofimetaboliciabsorption.
Theiabilityiofitheicellitoisynthesizeinewisubstancesiandisecreteitheseielsewhereirefersitoitheicellsifunctio
niofisecretion.
3. AieukaryoticicelliisiundergoingiDNAireplication.iIniwhichiregioniofitheicelliwouldimostiofith
eigenetici informationibeicontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:iC
Theiregioniofitheicellithaticontainsigeneticimaterial,iincludingiailargeiamountiofiribonucleiciacid,i
mostiofitheiDNA,iandiDNA-bindingiproteins,iisitheinucleolus.
Theimitochondriaiisitheisiteioficellularirespiration.
Theiribosomesiareiinvolvediinimanufacturingiofiproteinsiwithinitheicell.
Theinucleusicontainsitheinucleolus,iandiitiisitheinucleolusithaticontainsigeneticimaterial.
4. Theifluidimosaicimodeliforibiologicimembranesidescribesimembraneibehavior.iAccordingitoith
isimodel,iwhichiofitheifollowingifloatisinglyioriasiaggregatesiinitheifluidilipidibilayer?
a. Peripheralimembraneiproteins
b. Integralimembraneiproteins
, c. Glycoproteins
d. Celliadhesionimolecules
ANS:iB
Integralimembraneiproteinsifloatifreelyiinitheifluidilipidibilayer.
Peripheralimembraneiproteinsiareinotiembeddediinitheilayer,ibutiresideiatitheisurface.iGlycoprote
insiacti asicellisurfacei markers.
Celliadhesionimoleculesiareionitheioutsideiofitheimembraneiandiallowicellsitoihookitogether.
5. Whichiofitheifollowingicanibinditoiplasmaimembraneireceptors?
a. Oxygen
b. Ribosomes
c. Amphipathicilipids
d. Ligands
ANS:iD
Ligandsiareispecificimoleculesithaticanibindiwithireceptorsionitheicellimembrane.iOxygen
imovesibyidiffusion;iiti doesinotibinditoireceptors.
Ribosomesimakeiproteinsiandiareinotiinvolvediinibinding.i
Amphipathicilipidsiareiaiportioniofitheicellimembrane.
6. Ainurseiisireviewingiaireportifromiaipatientiwithimetastaticicancer.iWhatifindingiwouldisu
pportitheidiagnosisiofimetastaticicancer?iAlterationsiiniextracellularimatrixithatiinclude:
a. Decreasedifibronectin
b. Increasedicollagen
c. Decreasedielastin
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