, Understanding Pathophysiology 7th Edition Test Bank questio
v v v v v v
ns and answers
v v
Chapterv1.vCellularvBiology
MULTIPLEvCHOICE
1. Avstudentvisvobservingvavcellvundervthevmicroscope.vItvisvobservedvtovhavevsupercoiledvDNAv
withvhistones.vWhichvofvthevfollowingvwouldvalsovbevobservedvbyvthevstudent?
a. Avsinglevcircularvchromosome
b. Avnucleus
c. Free-floatingvnuclearvmaterial
d. Novorganelles
ANS:vB
Thevcellvdescribedvisvaveukaryoticvcell,vsovitvhasvhistonesvandvavsupercoiledvDNAvwithinvitsvnucleu
s;vthus,vthevnucleusvshouldvbevobserved.
Avsinglevcircularvchromosomevisvcharacteristicvofvprokaryoticvcells,vwhichvdovnotvhavevhistones.
Free-
floatingvnuclearvmaterialvdescribesvavprokaryoticvcell,vwhichvwouldvnotvhavevavdistinctvnucleus.
Eukaryoticvcellsvhavevmembranevboundedvcellularvcomponentsvcalledvorganelles.vNovorganellesvdescri
besvavprokaryoticvcell.
2. Avnursevisvinstructingvthevstaffvaboutvcellularvfunctions.vWhichvcellularvfunctionvisvthevnursevd
escribingvwhenvanvisolatedvcellvabsorbsvoxygenvandvusesvitvtovtransformvnutrientsvtovenergy?
a. Metabolicvabsorption
b. Communication
c. Secretion
d. Respiration
,ANS:vD
Thevabilityvofvthevcellvtovabsorbvoxygenvrefersvtovthevcellsvfunctionvofvrespiration.
Thevabilityvofvthevcellvtovfunctionvwithinvavsocietyvofvcellsvrefersvtovitsvfunctionvofvcommunication.
Thevabilityvofvthevcellvtovtakevinvnutrientsvrefersvtovthevcellsvfunctionvofvmetabolicvabsorption.
Thevabilityvofvthevcellvtovsynthesizevnewvsubstancesvandvsecretevthesevelsewherevrefersvtovthevcellsvf
unctionvofvsecretion.
3. AveukaryoticvcellvisvundergoingvDNAvreplication.vInvwhichvregionvofvthevcellvwouldvmostvofvt
hevgeneticvinformationvbevcontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:vC
Thevregionvofvthevcellvthatvcontainsvgeneticvmaterial,vincludingvavlargevamountvofvribonucleicvacid
,vmostvofvthevDNA,vandvDNA-bindingvproteins,visvthevnucleolus.
Thevmitochondriavisvthevsitevofvcellularvrespiration.
Thevribosomesvarevinvolvedvinvmanufacturingvofvproteinsvwithinvthevcell.
Thevnucleusvcontainsvthevnucleolus,vandvitvisvthevnucleolusvthatvcontainsvgeneticvmaterial.
4. Thevfluidvmosaicvmodelvforvbiologicvmembranesvdescribesvmembranevbehavior.vAccordingvtovt
hisvmodel,vwhichvofvthevfollowingvfloatvsinglyvorvasvaggregatesvinvthevfluidvlipidvbilayer?
a. Peripheralvmembranevproteins
b. Integralvmembranevproteins
, c. Glycoproteins
d. Cellvadhesionvmolecules
ANS:vB
Integralvmembranevproteinsvfloatvfreelyvinvthevfluidvlipidvbilayer.
Peripheralvmembranevproteinsvarevnotvembeddedvinvthevlayer,vbutvresidevatvthevsurface.vGlycoprot
einsvactvasvcellvsurfacevmarkers.
Cellvadhesionvmoleculesvarevonvthevoutsidevofvthevmembranevandvallowvcellsvtovhookvtogether.
5. Whichvofvthevfollowingvcanvbindvtovplasmavmembranevreceptors?
a. Oxygen
b. Ribosomes
c. Amphipathicvlipids
d. Ligands
ANS:vD
Ligandsvarevspecificvmoleculesvthatvcanvbindvwithvreceptorsvonvthevcellvmembrane.vOxyge
nvmovesvbyvdiffusion;vitvdoesvnotvbindvtovreceptors.
Ribosomesvmakevproteinsvandvarevnotvinvolvedvinvbinding.vAmphip
athicvlipidsvarevavportionvofvthevcellvmembrane.
6. Avnursevisvreviewingvavreportvfromvavpatientvwithvmetastaticvcancer.vWhatvfindingvwouldvs
upportvthevdiagnosisvofvmetastaticvcancer?vAlterationsvinvextracellularvmatrixvthatvinclude:
a. Decreasedvfibronectin
b. Increasedvcollagen
c. Decreasedvelastin
v v v v v v
ns and answers
v v
Chapterv1.vCellularvBiology
MULTIPLEvCHOICE
1. Avstudentvisvobservingvavcellvundervthevmicroscope.vItvisvobservedvtovhavevsupercoiledvDNAv
withvhistones.vWhichvofvthevfollowingvwouldvalsovbevobservedvbyvthevstudent?
a. Avsinglevcircularvchromosome
b. Avnucleus
c. Free-floatingvnuclearvmaterial
d. Novorganelles
ANS:vB
Thevcellvdescribedvisvaveukaryoticvcell,vsovitvhasvhistonesvandvavsupercoiledvDNAvwithinvitsvnucleu
s;vthus,vthevnucleusvshouldvbevobserved.
Avsinglevcircularvchromosomevisvcharacteristicvofvprokaryoticvcells,vwhichvdovnotvhavevhistones.
Free-
floatingvnuclearvmaterialvdescribesvavprokaryoticvcell,vwhichvwouldvnotvhavevavdistinctvnucleus.
Eukaryoticvcellsvhavevmembranevboundedvcellularvcomponentsvcalledvorganelles.vNovorganellesvdescri
besvavprokaryoticvcell.
2. Avnursevisvinstructingvthevstaffvaboutvcellularvfunctions.vWhichvcellularvfunctionvisvthevnursevd
escribingvwhenvanvisolatedvcellvabsorbsvoxygenvandvusesvitvtovtransformvnutrientsvtovenergy?
a. Metabolicvabsorption
b. Communication
c. Secretion
d. Respiration
,ANS:vD
Thevabilityvofvthevcellvtovabsorbvoxygenvrefersvtovthevcellsvfunctionvofvrespiration.
Thevabilityvofvthevcellvtovfunctionvwithinvavsocietyvofvcellsvrefersvtovitsvfunctionvofvcommunication.
Thevabilityvofvthevcellvtovtakevinvnutrientsvrefersvtovthevcellsvfunctionvofvmetabolicvabsorption.
Thevabilityvofvthevcellvtovsynthesizevnewvsubstancesvandvsecretevthesevelsewherevrefersvtovthevcellsvf
unctionvofvsecretion.
3. AveukaryoticvcellvisvundergoingvDNAvreplication.vInvwhichvregionvofvthevcellvwouldvmostvofvt
hevgeneticvinformationvbevcontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:vC
Thevregionvofvthevcellvthatvcontainsvgeneticvmaterial,vincludingvavlargevamountvofvribonucleicvacid
,vmostvofvthevDNA,vandvDNA-bindingvproteins,visvthevnucleolus.
Thevmitochondriavisvthevsitevofvcellularvrespiration.
Thevribosomesvarevinvolvedvinvmanufacturingvofvproteinsvwithinvthevcell.
Thevnucleusvcontainsvthevnucleolus,vandvitvisvthevnucleolusvthatvcontainsvgeneticvmaterial.
4. Thevfluidvmosaicvmodelvforvbiologicvmembranesvdescribesvmembranevbehavior.vAccordingvtovt
hisvmodel,vwhichvofvthevfollowingvfloatvsinglyvorvasvaggregatesvinvthevfluidvlipidvbilayer?
a. Peripheralvmembranevproteins
b. Integralvmembranevproteins
, c. Glycoproteins
d. Cellvadhesionvmolecules
ANS:vB
Integralvmembranevproteinsvfloatvfreelyvinvthevfluidvlipidvbilayer.
Peripheralvmembranevproteinsvarevnotvembeddedvinvthevlayer,vbutvresidevatvthevsurface.vGlycoprot
einsvactvasvcellvsurfacevmarkers.
Cellvadhesionvmoleculesvarevonvthevoutsidevofvthevmembranevandvallowvcellsvtovhookvtogether.
5. Whichvofvthevfollowingvcanvbindvtovplasmavmembranevreceptors?
a. Oxygen
b. Ribosomes
c. Amphipathicvlipids
d. Ligands
ANS:vD
Ligandsvarevspecificvmoleculesvthatvcanvbindvwithvreceptorsvonvthevcellvmembrane.vOxyge
nvmovesvbyvdiffusion;vitvdoesvnotvbindvtovreceptors.
Ribosomesvmakevproteinsvandvarevnotvinvolvedvinvbinding.vAmphip
athicvlipidsvarevavportionvofvthevcellvmembrane.
6. Avnursevisvreviewingvavreportvfromvavpatientvwithvmetastaticvcancer.vWhatvfindingvwouldvs
upportvthevdiagnosisvofvmetastaticvcancer?vAlterationsvinvextracellularvmatrixvthatvinclude:
a. Decreasedvfibronectin
b. Increasedvcollagen
c. Decreasedvelastin
