Test Bank for Understanding Pathophysiology, 8th Edition by Sue E. Huether, Kathryn L. McCance and Valentina L. Brashers isbn-9780323938051 All Chapters 1-44 Verified Latest Edition Guaranteed Pass

,Chapter1.CellularBiology 1q




MULTIPLECHOICE

1. Astudentisobservingacellunderthemicroscope.Itisobservedtohavesupercoiled DNAwith
1q 1k 1k 1q 1k 1q




1q histones.Whichofthefollowingwouldalsobeobservedbythestudent?
1q




a. Asinglecircularchromosome
b. Anucleus
c. Free-floatingnuclearmaterial 1k 1q




d. Noorganelles


ANS:B

Thecelldescribedisaeukaryoticcell,soithashistonesandasupercoiledDNAwithin itsnucleus; thus,
1k 1q 1q 1q 1q 1k 1k 1q 1q




thenucleusshouldbeobserved.
1q 1q 1q




Asinglecircularchromosomeischaracteristicofprokaryoticcells,whichdonothavehistones. 1q 1k 1k 1q 1k 1q




1q Free-floating nuclearmaterialdescribesaprokaryoticcell,whichwouldnot haveadistinctnucleus.
1k 1q 1k 1k 1k 1k 1k 1k 1q




Eukaryoticcellshavemembraneboundedcellularcomponentscalledorganelles.Noorganellesdescribes 1k 1q




1q a prokaryotic cell.
1k




2. Anurse isinstructingthestaffabout cellularfunctions.Whichcellularfunction isthenurse 1k 1q 1k 1q 1k




1q describingwhen anisolated 1k 1k 1 q 1 q




1 q cellabsorbsoxygenandusesittotransformnutrientstoenergy?

a. Metabolicabsorption
b. Communication
c. Secretion
d. Respiration

,ANS:D

The abilityofthecelltoabsorboxygenreferstothe cells functionofrespiration.
1k 1q 1q 1 q 1k




Theabilityofthecell tofunction withinasocietyofcellsreferstoitsfunctionofcommunication.
1k 1q 1k 1q




1q The abilityofthecelltotakein nutrientsrefersto thecells function ofmetabolic absorption.
1k 1q 1k 1q 1k 1q 1k 1q 1q 1k 1q 1q




Theabilityofthecelltosynthesizenewsubstancesandsecretetheseelsewherereferstothecellsfunction 1q




1q ofsecretion.

3. Aeukaryoticcell isundergoingDNAreplication.Inwhich regionofthecellwould most of the
1k 1k 1q 1q 1k 1q 1k 1 k1q 1k




1q geneticinformationbecontained?

a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus


ANS:C

Theregionofthecellthatcontainsgeneticmaterial,includinga largeamount ofribonucleicacid,
1k 1q 1k 1q 1q 1k 1q




1q most oftheDNA,and DNA-binding proteins,isthenucleolus.
1k 1q 1q 1k 1q 1k 1q 1q 1q




Themitochondriaisthesiteofcellularrespiration. 1q 1k




Theribosomesareinvolved inmanufacturing ofproteins withinthecell. 1k 1k 1k




Thenucleuscontainsthenucleolus,anditisthenucleolusthat contains geneticmaterial.
1q 1k 1k 1q 1q 1k 1k 1k 1q




4. Thefluid mosaicmodelforbiologicmembranesdescribesmembranebehavior.According tothis
1k 1k 1k 1q




1q model,whichofthefollowingfloatsinglyorasaggregatesin thefluidlipid bilayer?
1q 1q 1q 1k1q 1q 1k




a. Peripheralmembraneproteins
b. Integralmembraneproteins

, c. Glycoproteins
d. Cell adhesionmolecules
1k 1q




ANS:B

Integralmembraneproteinsfloat freelyinthefluid lipid bilayer. 1 k1q 1k 1q 1k1q 1k




1q Peripheralmembraneproteinsarenot embedded in thelayer,but resideatthesurface.Glycoproteins 1k 1q 1k 1q 1 k1q 1q




1q actascellsurfacemarkers.

Celladhesionmoleculesareonthe outsideofthemembraneandallowcellsto hooktogether. 1k 1 q 1k




5. Whichofthefollowingcanbind toplasmamembranereceptors? 1k 1q




a. Oxygen
b. Ribosomes
c. Amphipathiclipids
d. Ligands


ANS:D

Ligands arespecificmoleculesthatcanbindwithreceptorsonthecellmembrane.Oxygen
1k 1q 1k 1k 1q




1q movesbydiffusion;itdoesnot bindtoreceptors.1q 1k1q




Ribosomesmakeproteinsandarenot involved inbinding.
1k 1k 1k 1k 1k 1k




1q Amphipathiclipidsareaportionofthecellmembrane.

6. Anurse isreviewingareportfromapatient withmetastaticcancer.Whatfindingwould 1k 1k1q




1 q supportthediagnosisofmetastaticcancer?Alterationsinextracellular
1k 1k 1k




matrixthatinclude:
1q 1k




a. Decreasedfibronectin1k




b. Increasedcollagen
c. Decreasedelastin 1k