Understanding tekrPathophysiology tekr6th tekrEdition tekrHuether tekrTest

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Chapter tekr01: tekrCellular tekrBiology 2 / 4

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Huether tekr& tekrMcCance: tekrUnderstanding tekrPathophysiology, tekr7th tekrEdition

MULTIPLE

tekrCHOICE

• A tekrstudent tekris tekrobserving tekra tekrcell tekrunder tekrthe tekrmicroscope. tekrIt tekris tekrobserved tekrto tekrhave

tekrsupercoiled tekrDNA tekrwith tekrhistones. tekrWhich tekrof tekrthe tekrfollowing tekrwould tekralso tekrbe tekrobserved tekrby tekrthe tekrstudent?

• A tekrsingle tekrcircular tekrchromosome
• A tekrnucleus
• Free-floating tekrnuclear tekrmaterial
• No tekrorganelles

ANS: t e k rB

The tekrcell tekrdescribed tekris tekra tekreukaryotic tekrcell, tekrso tekrit tekrhas tekrhistones tekrand tekra tekrsupercoiled tekrDNA tekrwithin tekrits tekrnucleus; tekrthus, t ekrthe tekrnucleus tekrshould tekrbe tekrobserved. tekrA tekrsingle tekrcircular tekrchromosome tekrcalled tekra tekrprokaryote tekrcontains tekrfree-floating tekrnuclear tekrmaterial t ekrbut tekrhas tekrno tekrorganelles.

REF: t e k rp. tekr2

• A tekrnurse tekris tekrinstructing tekrthe tekrstaff t ekrabout tekrcellular tekrfunctions. tekrWhich tekrcellular tekrfunction tekris tekrthe

tekrnurse tekrdescribing tekrwhen tekran tekrisolated tekrcell tekrabsorbs tekroxygen tekrand tekruses tekrit tekrto tekrtransform tekrnutrients tekrto tekrenergy?

• Metabolic tekrabsorption
• Communication
• Secretion
• Respiration

ANS:

t e k rD N U R S I N G T B.C O M The tekrcell’s tekrability tekrto tekrabsorb tekroxygen tekris tekrreferred tekrto tekras tekrrespiration tekrwhile tekrits tekrcommunication tekrability tekrinvolves tekrmaintenance tekrof tekra tekrsteady tekrdynamic tekrstate, tekrmetabolic tekrabsorption tekrprovides tekrnutrition, tekrand tekrsecretion tekrallows tekrfor tekrthe tekrsynthesizing tekrof tekrnew tekrsubstances.

REF: t e k rp. tekr2

• A tekreukaryotic tekrcell tekris tekrundergoing tekrDNA tekrreplication. tekrIn tekrwhich tekrregion tekrof tekrthe tekrcell tekrwould

tekrmost tekrof tekrthe tekrgenetic tekrinformation tekrbe tekrcontained?

• Mitochondria
• Ribosome
• Nucleolus
• Nucleus tekrCytoplasm

ANS: t e k rC

The tekrregion tekrof tekrthe tekrcell tekrthat tekrcontains tekrgenetic tekrmaterial, tekrincluding tekra tekrlarge tekramount tekrof tekrribonucleic tekracid, tekrmost tekrof tekrthe tekrDNA, tekrand tekrDNA-binding tekrproteins, tekris tekrthe tekrnucleolus, tekrwhich tekris tekrlocated tekrwithin tekrthe tekrcell’s tekrnucleus. tekrMitochondria tekris tekrassociated tekrwith tekrcellular tekrrespiration, tekrwhile tekrribosomes tekrare t ekrinvolved tekrwith tekrprotein tekrmanufacturing. tekrCytoplasm tekris tekra tekrfluid tekrfilling tekrthat tekris tekra tekrcomponent tekrof tekrthe tekrcell.

REF: t e k rp. tekr2 3 / 4

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U tekrS tekrN tekrT O

• Which tekrof tekrthe tekrfollowing tekrcan tekrremove tekrproteins tekrattached tekrto tekrthe tekrcell’s tekrbilayer tekrby

tekrdissolving tekrthe tekrlayer tekritself?

• Peripheral tekrmembrane tekrproteins
• Integral tekrmembrane tekrproteins
• Glycoproteins
• Cell tekradhesion tekrmolecules

ANS: t e k rB

Proteins tekrdirectly tekrattached t ekrto tekrthe tekrmembrane tekrbilayer tekrcan tekrbe tekrremoved tekrby tekrthe tekraction tekrof tekrintegral tekrmembrane tekrproteins tekrthat tekrdissolve tekrthe tekrbilayer. tekrPeripheral tekrmembrane tekrproteins tekrreside tekrat tekrthe t ekrsurface tekrwhile tekrcell tekradhesion tekrmolecules tekrare tekron tekrthe tekroutside tekrof tekrthe tekrmembrane. tekrGlycoprotein t ekrmarks tekrcells tekrand tekrdoes tekrnot t ekrfloat.

REF: t e k rp. tekr7

• Which tekrof tekrthe tekrfollowing tekrcan tekrbind tekrto tekrplasma tekrmembrane tekrreceptors?
• Oxygen
• Ribosomes
• Amphipathic tekrlipids
• Ligands

ANS: t e k rD

Ligands tekrare tekrthe tekronly tekrspecific tekrmolecules tekrthat tekrcan tekrbind tekrwith tekrreceptors tekron tekrthe tekrcell tekrmembrane.

REF: t e k rp. tekr9

• A tekrnurse tekris tekrreviewing tekra tekrreport tekrfrom tekra tekrpatient tekrwith tekrmetastatic tekrcancer. tekrWhat

tekralternation tekrin tekrthe tekrextracellular tekrmatrix tekrwould tekrsuNppoRrt tekrthIe tekrdGiagnBo.siCs tekrofMmetastatic tekrcancer?

• Decreased tekrfibronectin
• Increased tekrcollagen
• Decreased tekrelastin
• Increased tekrglycoproteins

ANS: t e k rA

Only tekra tekrreduced tekramount tekrof tekrfibronectin tekris tekrfound tekrin tekrsome tekrtypes t ekrof tekrcancerous tekrcells, tekrallowing tekrthem tekrto tekrtravel tekror tekrmetastasize.

REF: t e k rp. tekr10

• Which tekrform tekrof tekrcell tekrcommunication tekris tekrused tekrto tekrrelate tekrto tekrother tekrcells tekrin tekrdirect tekrphysical

tekrcontact?

• Cell tekrjunction
• Gap tekrjunction
• Desmosome
• Tight tekrjunction

ANS: t e k rA

Cell tekrjunctions tekrhold tekrcells tekrtogether tekrand tekrpermit tekrmolecules tekrto tekrpass tekrfrom tekrcell tekrto tekrcell.Gap tekrjunctions tekrallow tekrfor tekrcellular tekrcommunication tekrbetween tekrcells. tekrNeither tekrdesmosomes tekrnor tekrtight tekrjunctions tekrare tekrassociated t ekrwith tekrcellular tekrcommunication.

REF: t e k rp. tekr11

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