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Understanding Pathophysiology 7th Edition by Sue Huether, Kathryn McCance
Understanding Pathophysiology 7th Edition by Sue Huether, Kathryn McCance
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, Understanding jPathophysiology j7th jEdition jTest jBankChapter j1. jCellular jBiology
MULTIPLE jCHOICE
1. A jstudent jis jobserving ja jcell junder jthe jmicroscope. jIt jis jobserved jto jhave jsupercoiled
jDNA jwith jhistones. jWhich jof jthe jfollowing jwould jalso jbe jobserved jby jthe jstudent?
a. A jsingle jcircular jchromosome
b. A jnucleus
c. Free-floating jnuclear jmaterial
d. No jorganelles
ANS: jB
The jcell jdescribed jis ja jeukaryotic jcell, jso jit jhas jhistones jand ja jsupercoiled jDNA jwithin jits
jnucleus; jthus, jthe jnucleus jshould jbe jobserved.
A jsingle jcircular jchromosome jis jcharacteristic jof jprokaryotic jcells, jwhich jdo jnot jhave jhistones.
Free-floating jnuclear jmaterial jdescribes ja jprokaryotic jcell, jwhich jwould jnot jhave ja jdistinct
jnucleus.
Eukaryotic jcells jhave jmembrane jbounded jcellular jcomponents jcalled jorganelles. jNo jorganelles
jdescribes ja jprokaryotic jcell.
2. A jnurse jis jinstructing jthe jstaff jabout jcellular jfunctions. jWhich jcellular jfunction jis jthe
jnurse jdescribing jwhen jan jisolated jcell jabsorbs joxygen jand juses jit jto jtransform jnutrients
jto jenergy?
a. Metabolic jabsorption
b. Communication
c. Secretion
d. Respiration
,ANS: jD
The jability jof jthe jcell jto jabsorb joxygen jrefers jto jthe jcells jfunction jof jrespiration.
The jability jof jthe jcell jto jfunction jwithin ja jsociety jof jcells jrefers jto jits jfunction jof
jcommunication.
The jability jof jthe jcell jto jtake jin jnutrients jrefers jto jthe jcells jfunction jof jmetabolic jabsorption.
The jability jof jthe jcell jto jsynthesize jnew jsubstances jand jsecrete jthese jelsewhere jrefers jto jthe
jcells jfunction jof jsecretion.
3. A jeukaryotic jcell jis jundergoing jDNA jreplication. jIn jwhich jregion jof jthe jcell jwould jmost
jof jthe jgenetic jinformation jbe jcontained?
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS: jC
The jregion jof jthe jcell jthat jcontains jgenetic jmaterial, jincluding ja jlarge jamount jof jribonucleic
jacid, jmost jof jthe jDNA, jand jDNA-binding jproteins, jis jthe jnucleolus.
The jmitochondria jis jthe jsite jof jcellular jrespiration.
The jribosomes jare jinvolved jin jmanufacturing jof jproteins jwithin jthe jcell.
The jnucleus jcontains jthe jnucleolus, jand jit jis jthe jnucleolus jthat jcontains jgenetic jmaterial.
4. The jfluid jmosaic jmodel jfor jbiologic jmembranes jdescribes jmembrane jbehavior. jAccording
jto jthis jmodel, jwhich jof jthe jfollowing jfloat jsingly jor jas jaggregates jin jthe jfluid jlipid
jbilayer?
a. Peripheral jmembrane jproteins
b. Integral jmembrane jproteins
, c. Glycoproteins
d. Cell jadhesion jmolecules
ANS: jB
Integral jmembrane jproteins jfloat jfreely jin jthe jfluid jlipid jbilayer.
Peripheral jmembrane jproteins jare jnot jembedded jin jthe jlayer, jbut jreside jat jthe jsurface.
jGlycoproteins jact jas jcell jsurface jmarkers.
Cell jadhesion jmolecules jare jon jthe joutside jof jthe jmembrane jand jallow jcells jto jhook jtogether.
5. Which jof jthe jfollowing jcan jbind jto jplasma jmembrane jreceptors?
a. Oxygen
b. Ribosomes
c. Amphipathic jlipids
d. Ligands
ANS: jD
Ligands jare jspecific jmolecules jthat jcan jbind jwith jreceptors jon jthe jcell jmembrane.
jOxygen jmoves jby jdiffusion; jit jdoes jnot jbind jto jreceptors.
Ribosomes jmake jproteins jand jare jnot jinvolved jin
jbinding. jAmphipathic jlipids jare ja jportion jof jthe jcell
jmembrane.
6. A jnurse jis jreviewing ja jreport jfrom ja jpatient jwith jmetastatic jcancer. jWhat jfinding
jwould jsupport jthe jdiagnosis jof jmetastatic jcancer? jAlterations jin jextracellular jmatrix
jthat jinclude:
a. Decreased jfibronectin
b. Increased jcollagen
c. Decreased jelastin
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