, Understanding Pathophysiology 7th Edition Test Bank
n n n n n
Chaptern1.nCellularnBiology
MULTIPLEnCHOICE
1. Anstudentnisnobservingnancellnundernthenmicroscope.nItnisnobservedntonhavensupercoilednDNAn
withnhistones.nWhichnofnthenfollowingnwouldnalsonbenobservednbynthenstudent?
a. Ansinglencircularnchromosome
b. Annucleus
c. Free-floatingnnuclearnmaterial
d. Nonorganelles
ANS:nB
Thencellndescribednisnaneukaryoticncell,nsonitnhasnhistonesnandnansupercoilednDNAnwithinnitsnn
ucleus;nthus,nthennucleusnshouldnbenobserved.
Ansinglencircularnchromosomenisncharacteristicnofnprokaryoticncells,nwhichndonnotnhavenhistones.
Free-
floatingnnuclearnmaterialndescribesnanprokaryoticncell,nwhichnwouldnnotnhavenandistinctnnucleu
s.
Eukaryoticncellsnhavenmembranenboundedncellularncomponentsncallednorganelles.nNonorganellesnd
escribesnanprokaryoticncell.
2. Annursenisninstructingnthenstaffnaboutncellularnfunctions.nWhichncellularnfunctionnisnthennursend
,escribingnwhennannisolatedncellnabsorbsnoxygennandnusesnitntontransformnnutrientsntonenergy?
a. Metabolicnabsorption
b. Communication
c. Secretion
d. Respiration
, ANS:nD
Thenabilitynofnthencellntonabsorbnoxygennrefersntonthencellsnfunctionnofnrespiration.
Thenabilitynofnthencellntonfunctionnwithinnansocietynofncellsnrefersntonitsnfunctionnofnc
ommunication.
Thenabilitynofnthencellntontakeninnnutrientsnrefersntonthencellsnfunctionnofnmetabolicnabsorption.
Thenabilitynofnthencellntonsynthesizennewnsubstancesnandnsecretenthesenelsewherenrefersntonthencellsnf
unctionnofnsecretion.
3. AneukaryoticncellnisnundergoingnDNAnreplication.nInnwhichnregionnofnthencellnwouldnmostnofnt
hengeneticninformationnbencontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:nC
Thenregionnofnthencellnthatncontainsngeneticnmaterial,nincludingnanlargenamountnofnribonucleicna
cid,nmostnofnthenDNA,nandnDNA-bindingnproteins,nisnthennucleolus.
Thenmitochondrianisnthensitenofncellularnrespiration.
Thenribosomesnareninvolvedninnmanufacturingnofnproteinsnwithinnthencell.
Thennucleusncontainsnthennucleolus,nandnitnisnthennucleolusnthatncontainsngeneticnmaterial.
4. Thenfluidnmosaicnmodelnfornbiologicnmembranesndescribesnmembranenbehavior.nAccordingntont
hisnmodel,nwhichnofnthenfollowingnfloatnsinglynornasnaggregatesninnthenfluidnlipidnbilayer?
a. Peripheralnmembranenproteins
b. Integralnmembranenproteins
n n n n n
Chaptern1.nCellularnBiology
MULTIPLEnCHOICE
1. Anstudentnisnobservingnancellnundernthenmicroscope.nItnisnobservedntonhavensupercoilednDNAn
withnhistones.nWhichnofnthenfollowingnwouldnalsonbenobservednbynthenstudent?
a. Ansinglencircularnchromosome
b. Annucleus
c. Free-floatingnnuclearnmaterial
d. Nonorganelles
ANS:nB
Thencellndescribednisnaneukaryoticncell,nsonitnhasnhistonesnandnansupercoilednDNAnwithinnitsnn
ucleus;nthus,nthennucleusnshouldnbenobserved.
Ansinglencircularnchromosomenisncharacteristicnofnprokaryoticncells,nwhichndonnotnhavenhistones.
Free-
floatingnnuclearnmaterialndescribesnanprokaryoticncell,nwhichnwouldnnotnhavenandistinctnnucleu
s.
Eukaryoticncellsnhavenmembranenboundedncellularncomponentsncallednorganelles.nNonorganellesnd
escribesnanprokaryoticncell.
2. Annursenisninstructingnthenstaffnaboutncellularnfunctions.nWhichncellularnfunctionnisnthennursend
,escribingnwhennannisolatedncellnabsorbsnoxygennandnusesnitntontransformnnutrientsntonenergy?
a. Metabolicnabsorption
b. Communication
c. Secretion
d. Respiration
, ANS:nD
Thenabilitynofnthencellntonabsorbnoxygennrefersntonthencellsnfunctionnofnrespiration.
Thenabilitynofnthencellntonfunctionnwithinnansocietynofncellsnrefersntonitsnfunctionnofnc
ommunication.
Thenabilitynofnthencellntontakeninnnutrientsnrefersntonthencellsnfunctionnofnmetabolicnabsorption.
Thenabilitynofnthencellntonsynthesizennewnsubstancesnandnsecretenthesenelsewherenrefersntonthencellsnf
unctionnofnsecretion.
3. AneukaryoticncellnisnundergoingnDNAnreplication.nInnwhichnregionnofnthencellnwouldnmostnofnt
hengeneticninformationnbencontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:nC
Thenregionnofnthencellnthatncontainsngeneticnmaterial,nincludingnanlargenamountnofnribonucleicna
cid,nmostnofnthenDNA,nandnDNA-bindingnproteins,nisnthennucleolus.
Thenmitochondrianisnthensitenofncellularnrespiration.
Thenribosomesnareninvolvedninnmanufacturingnofnproteinsnwithinnthencell.
Thennucleusncontainsnthennucleolus,nandnitnisnthennucleolusnthatncontainsngeneticnmaterial.
4. Thenfluidnmosaicnmodelnfornbiologicnmembranesndescribesnmembranenbehavior.nAccordingntont
hisnmodel,nwhichnofnthenfollowingnfloatnsinglynornasnaggregatesninnthenfluidnlipidnbilayer?
a. Peripheralnmembranenproteins
b. Integralnmembranenproteins
