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Understanding Pathophysiology 7th Edition Test Bank| Chapt
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Understanding Pathophysiology 7th Edition Test Bank
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Chapterb1.bCellularbBiology
MULTIPLEbCHOICE
1. Abstudentbisbobservingbabcellbunderbthebmicroscope.bItbisbobservedbtobhavebsupercoiledbDNAb
withbhistones.bWhichbofbthebfollowingbwouldbalsobbebobservedbbybthebstudent?
a. Absinglebcircularbchromosome
b. Abnucleus
c. Free-floatingbnuclearbmaterial
d. Noborganelles
ANS:bB
Thebcellbdescribedbisbabeukaryoticbcell,bsobitbhasbhistonesbandbabsupercoiledbDNAbwithinbitsbn
ucleus;bthus,bthebnucleusbshouldbbebobserved.
Absinglebcircularbchromosomebisbcharacteristicbofbprokaryoticbcells,bwhichbdobnotbhavebhistones.
Free-
floatingbnuclearbmaterialbdescribesbabprokaryoticbcell,bwhichbwouldbnotbhavebabdistinctbnucleu
s.
Eukaryoticbcellsbhavebmembranebboundedbcellularbcomponentsbcalledborganelles.bNoborganellesbd
escribesbabprokaryoticbcell.
2. Abnursebisbinstructingbthebstaffbaboutbcellularbfunctions.bWhichbcellularbfunctionbisbthebnursebd
escribingbwhenbanbisolatedbcellbabsorbsboxygenbandbusesbitbtobtransformbnutrientsbtobenergy?
a. Metabolicbabsorption
b. Communication
c. Secretion
,Understanding Pathophysiology 7th Edition Test Bank| Chapt
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Understanding Pathophysiology 7th Edition Test Bank| Chapt
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d. Respiration
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Understanding Pathophysiology 7th Edition Test Bank| Chapt
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ANS:bD
Thebabilitybofbthebcellbtobabsorbboxygenbrefersbtobthebcellsbfunctionbofbrespiration.
Thebabilitybofbthebcellbtobfunctionbwithinbabsocietybofbcellsbrefersbtobitsbfunctionbofbc
ommunication.
Thebabilitybofbthebcellbtobtakebinbnutrientsbrefersbtobthebcellsbfunctionbofbmetabolicbabsorption.
Thebabilitybofbthebcellbtobsynthesizebnewbsubstancesbandbsecretebthesebelsewherebrefersbtobthebcellsbf
unctionbofbsecretion.
3. AbeukaryoticbcellbisbundergoingbDNAbreplication.bInbwhichbregionbofbthebcellbwouldbmostbofbt
hebgeneticbinformationbbebcontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:bC
Thebregionbofbthebcellbthatbcontainsbgeneticbmaterial,bincludingbablargebamountbofbribonucleicba
cid,bmostbofbthebDNA,bandbDNA-bindingbproteins,bisbthebnucleolus.
Thebmitochondriabisbthebsitebofbcellularbrespiration.
Thebribosomesbarebinvolvedbinbmanufacturingbofbproteinsbwithinbthebcell.
Thebnucleusbcontainsbthebnucleolus,bandbitbisbthebnucleolusbthatbcontainsbgeneticbmaterial.
4. Thebfluidbmosaicbmodelbforbbiologicbmembranesbdescribesbmembranebbehavior.bAccordingbtobt
hisbmodel,bwhichbofbthebfollowingbfloatbsinglyborbasbaggregatesbinbthebfluidblipidbbilayer?
a. Peripheralbmembranebproteins
b. Integralbmembranebproteins
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c. Glycoproteins
d. Cellbadhesionbmolecules
ANS:bB
Integralbmembranebproteinsbfloatbfreelybinbthebfluidblipidbbilayer.
Peripheralbmembranebproteinsbarebnotbembeddedbinbtheblayer,bbutbresidebatbthebsurface.b
Glycoproteinsbactbasbcellbsurfacebmarkers.
Cellbadhesionbmoleculesbarebonbtheboutsidebofbthebmembranebandballowbcellsbtobhookbtogether.
5. Whichbofbthebfollowingbcanbbindbtobplasmabmembranebreceptors?
a. Oxygen
b. Ribosomes
c. Amphipathicblipids
d. Ligands
ANS:bD
Ligandsbarebspecificbmoleculesbthatbcanbbindbwithbreceptorsbonbthebcellbmembrane.b
Oxygenbmovesbbybdiffusion;bitbdoesbnotbbindbtobreceptors.
Ribosomesbmakebproteinsbandbarebnotbinvolvedbinbbinding.b
Amphipathicblipidsbarebabportionbofbthebcellbmembrane.
6. Abnursebisbreviewingbabreportbfrombabpatientbwithbmetastaticbcancer.bWhatbfindingbwouldbs
upportbthebdiagnosisbofbmetastaticbcancer?bAlterationsbinbextracellularbmatrixbthatbinclude:
a. Decreasedbfibronectin
b. Increasedbcollagen
c. Decreasedbelastin