Understanding Pathophysiology 7th edition by Huethe
r, McCance Test Bank
,Understanding Pathophysiology 7th edition by Huether, McCance Test Bank
l l l l l l l l
Updated Examination Study Guide
l l l l
Chapter 1. Cellular Biology
MULTIPLECHOICE
1. Astudentisobservingacellunderthemicroscope. It isobservedtohavesupercoiled DN
A with histones. Whichofthefollowingwouldalsobeobservedbythestudent?
a. Asinglecircularchromosome
b. Anucleus
c. Free-floatingnuclearmaterial
d. Nolorganelles
ANS: B
Thelcelldescribedis aeukaryoticcell, so it has histonesandasupercoiled DNA withinitsnucle
us; th us,lthenucleusshouldbeobserved.
Asinglecircularchromosomeischaracteristicofprokaryoticcells, whichdonothavehistones.
Free-
floatinglnuclearmaterialdescribesaprokaryoticcell, whichwouldnotlhaveadistinctnucleus.
Eukaryoticlcellshavelmembraneboundedcellularcomponentscalledorganelles. No organellesdes
cribeslaprokaryoticcell.
2. Anurseisinstructingthelstaffaboutcellularfunctions. Whichcellularfunctionlisthenursedesc
ribingwhen an isolatedlcell absorbsoxygenandusesittoltransformlnutrients
toenergy?
a. Metaboliclabsorption
b. Communication
c. Secretion
,d. Respiration
, ANS: D
Thelabilityofthelcell toabsorboxygenrefersltothecellsfunctionofrespiration.
Thelabilityofthecelltofunctionwithinasocietyofcellsreferstoitsfunctionofcommunication.
Thelabilityof thecell totakein nutrients refersto thecellsfunction ofmetabolica
bsorption.
Theabilityofthelcelltosynthesizenewsubstancesandsecretetheselelsewherereferstothecellsfunction
ofsecretion.
3. Aeukaryoticcellisundergoing DNA replication. In whichregionofthecellwouldmo
stoftheg eneticinformationbecontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C
Thelregionofthelcellthatcontainsgeneticmaterial, includingalargeamountofribonucleicacid, m
ostofthe DNA, and DNA-binding proteins, isthenucleolus.
Thelmitochondriaisthesiteofcellularrespiration.
Thelribosomesareinvolvedinmanufacturingofproteinswithinthecell.
Thelnucleuscontainslthelnucleolus, anditisthenucleolusthatcontainsgeneticmaterial.
4. Thelfluidmosaiclmodelforbiologicmembranesdescribesmembranebehavior. Accordingtothis
model, whichofthefollowingfloatlsinglyor as aggregatesinlthefluid lipid bila
yer?
a. Peripheralmembraneproteins
b. Integralmembraneproteins
r, McCance Test Bank
,Understanding Pathophysiology 7th edition by Huether, McCance Test Bank
l l l l l l l l
Updated Examination Study Guide
l l l l
Chapter 1. Cellular Biology
MULTIPLECHOICE
1. Astudentisobservingacellunderthemicroscope. It isobservedtohavesupercoiled DN
A with histones. Whichofthefollowingwouldalsobeobservedbythestudent?
a. Asinglecircularchromosome
b. Anucleus
c. Free-floatingnuclearmaterial
d. Nolorganelles
ANS: B
Thelcelldescribedis aeukaryoticcell, so it has histonesandasupercoiled DNA withinitsnucle
us; th us,lthenucleusshouldbeobserved.
Asinglecircularchromosomeischaracteristicofprokaryoticcells, whichdonothavehistones.
Free-
floatinglnuclearmaterialdescribesaprokaryoticcell, whichwouldnotlhaveadistinctnucleus.
Eukaryoticlcellshavelmembraneboundedcellularcomponentscalledorganelles. No organellesdes
cribeslaprokaryoticcell.
2. Anurseisinstructingthelstaffaboutcellularfunctions. Whichcellularfunctionlisthenursedesc
ribingwhen an isolatedlcell absorbsoxygenandusesittoltransformlnutrients
toenergy?
a. Metaboliclabsorption
b. Communication
c. Secretion
,d. Respiration
, ANS: D
Thelabilityofthelcell toabsorboxygenrefersltothecellsfunctionofrespiration.
Thelabilityofthecelltofunctionwithinasocietyofcellsreferstoitsfunctionofcommunication.
Thelabilityof thecell totakein nutrients refersto thecellsfunction ofmetabolica
bsorption.
Theabilityofthelcelltosynthesizenewsubstancesandsecretetheselelsewherereferstothecellsfunction
ofsecretion.
3. Aeukaryoticcellisundergoing DNA replication. In whichregionofthecellwouldmo
stoftheg eneticinformationbecontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: C
Thelregionofthelcellthatcontainsgeneticmaterial, includingalargeamountofribonucleicacid, m
ostofthe DNA, and DNA-binding proteins, isthenucleolus.
Thelmitochondriaisthesiteofcellularrespiration.
Thelribosomesareinvolvedinmanufacturingofproteinswithinthecell.
Thelnucleuscontainslthelnucleolus, anditisthenucleolusthatcontainsgeneticmaterial.
4. Thelfluidmosaiclmodelforbiologicmembranesdescribesmembranebehavior. Accordingtothis
model, whichofthefollowingfloatlsinglyor as aggregatesinlthefluid lipid bila
yer?
a. Peripheralmembraneproteins
b. Integralmembraneproteins
