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Test bank for Porth's Essentials of Pathophysiology 5th edition Porth's Essentials of Pathophysiology
Test bank for Porth's Essentials of Pathophysiology 5th edition Porth's Essentials of Pathophysiology
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Answerdone.comTESTr BANKr FOR
Porth's Essentials of Pathophysiology 5th edition
r r r r r
by Tommie L Norris
r r r
,Answerdone.com
1. Chapterr1
Althoughrtherbasicrstructurerofrthercellrplasmarmembranerisrformedrbyrarlipidrbilayer,rmostrofrthers
pecificrmembranerfunctionsrarercarriedroutrby:
A) Boundrandrtransmembranerproteins
B) Complex,rlongrcarbohydraterchains
C) Surfacerantigensrandrhormonerreceptors
D) Argatingrsystemrofrselectiverionrchannels
Ans:rA
Feedback:
Therfunctionsrofrplasmarmembranerdependronrtherpresencerofrproteinsrthatrarerboundrinrtherlipidrbila
yerrandrsomerthatrhavertherabilityrtorpassrfreelyrintorandroutrofrthercell.
Carbohydraterchainsrformrarcellrcoatrthatrsurroundsrthermembranerandrthatrcontainrsurfacerantige
nsrandrsurfacerhormonerreceptors.rSomerionrchannelsrarergatedrandropenronlyrwhenrthermembran
erpotentialrchangesrsignificantly.
2. Whichrdescribesrtherfunctionrofrthernucleus?
A) Itrisrbasicallyrthersiterofrproteinrsynthesisrinrtherbody.
B) Itrcontainsrthergeneticrcoderforrtherindividual.
C) Itrisrthertransformerrofrcellularrenergy.
D) Itrinitiatesrtherprocessrofraerobicrmetabolism.
Ans:rB
Feedback:
ThernucleusrcontainsrDNA,rwhichrcontainsrthergeneticrcoderthatrcontainsrtherinformationrthatrcontr
olsrcells.rRibosomesrsynthesizerprotein.rMitochondriartransformrorganicrcompoundsrintorcellularre
nergy.rMitochondriarrequireroxygenrforraerobicrmetabolism,rusingrhydrogenrandrcarbonrcombinedr
withroxygenrmoleculesrtorformrcarbonrdioxiderandrwaterrasrenergyrisrreleased.
3. WhichrofrtherfollowingraspectsrofrtherfunctionrofrthernucleusrisrperformedrbyrribosomalrRN
Ar(rRNA)?
,Answerdone.com
A) CopyingrandrcarryingrDNArinstructionsrforrproteinrsynthesis
B) Carryingraminoracidsrtorthersiterofrproteinrsynthesis
C) Providingrthersiterwhererproteinrsynthesisroccurs
D) Regulatingrandrcontrollingrproteinrsynthesis
Ans:rC
Feedback:
Thererarerthreertypesrofrribonucleicracidr(messengerrRNA,rribosomalrRNA,randrtransferrRNA)rthat
rmovertorthercytoplasmrandrcarryroutrtheractualrsynthesisrofrproteins.
MessengerrRNAr(mRNA)rcopiesrandrcarriesrtherDNArinstructionsrforrproteinrsynthesisrtorthercyt
oplasm;rribosomalrRNAr(rRNA)risrthersiterofrproteinrsynthesis;randrtransferrRNAr(tRNA)rtranspo
rtsraminoracidsrtorthersiterofrproteinrsynthesisrforrincorporationrintortherproteinrbeingrsynthesized.
4. Whichraccuratelyrexplainsrtherfunctionsrofrtherorganellesrlysosomes?rThey:
A) Arersacsrfilledrwithrenzymesrthatrbreakdownrandrremoverforeignrsubstancesrandrworn-
routrcellrparts
B) Functionrinrassociationrwithrtherendoplasmicrreticulumrtormodifyrproteinrendrproductsran
drpackagerthemrintorsecretoryrgranulesrorrvesicles
C) Arersmallrparticlesrofrnucleoproteinsrthatrarerinvolvedrinrthersynthesisrofrproteinsrthatrre
mainrinrthercellrasrcytoplasmicrstructuralrorrfunctionalrelements
D) Arerardynamicrsystemrofrinterconnectedrmembranousrtubesrthatrfunctionsrasrartubularrco
mmunicationrsystemrforrtransportingrvariousrsubstancesrfromronerpartrofrthercellrtoranother
Ans:rA
Feedback:
Lysosomesrarersacsrthatrarerfilledrwithrhydrolyticrenzymesrthatraidrinrtherprocessingrandrremovalrof
runwantedrsubstancesrwithinrthercytoplasm.rTherGolgirapparatusrfunctionsrinrassociationrwithrthere
ndoplasmicrreticulumrtormodifyrandrpackagersubstancesrinrpreparationrforrsecretion,rwhereasrribos
omesrarersmallrparticlesrofrnucleoproteinsrthatrarerinvolvedrinrthersynthesisrofrproteins.rTherERrisrar
tubularrcommunicationrsystemrforrtransportingrvariousrsubstancesrfromronerpartrofrthercellrtoranoth
er.
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5. Impairmentrinrtherfunctionrofrperoxisomesrwouldrresultrin:
A) Inadequatersitesrforrproteinrsynthesis
B) Anrinabilityrtortransportrcellularrproductsracrossrthercellrmembrane
C) Insufficientrenergyrproductionrwithinrarcell
D) Accumulationrofrfreerradicalsrinrthercytoplasm
Ans:rD
Feedback:
Peroxisomesrfunctionrinrthercontrolrofrfreerradicals;runlessrdegraded,rtheserhighlyrunstablerche
micalrcompoundsrdamagerotherrcytoplasmicrmolecules.rPeroxisomesrdornotrdirectlyrcontribu
tertorenergyrproduction,rproteinrsynthesis,rorrtransportrofrcellularrsecretions.
6. Althoughrenergyrisrnotrmaderinrmitochondria,rtheyrarerknownrasrther“powerrplants”rofrther
cellrbecauserthey:
A) ContainrRNArforrproteinrsynthesis
B) Utilizerglycolysisrforroxidativerenergy
C) Extractrenergyrfromrorganicrcompounds
D) Storercalciumrbondsrforrmusclercontractions
Ans:rC
Feedback:
Mitochondriarcontainrtherenzymesrneededrforrtransformingrorganicrcompoundsrintorenergyrthatrisre
asilyraccessiblertorthercell.rMitochondriarcontainrtheirrownrDNA.rGlycolysisrisranaerobicrmetaboli
smrandrunrelatedrtoroxidativerenergy.rMitochondriarstorerphosphaterbondsr(suchrasrinrATP)rtorpow
errcellularrfunctions.
7. Semenranalysisrindicatesrthatrtherclient'srspermrhaverdecreasedrmotility.rWhichrofrtherfoll
owingrcellularrcomponentsrmayrberdefectiverwithinrtherclient'srsperm?
A) Ribosomes
B) Microtubules
C) Mitochondria
D) Microfilaments
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