,Chapter1.Cellular Biology x, x, x,
MULTIPLECHOICE x,
1. Astudent isobservingacellunder themicroscope.ItisobservedtohavesupercoiledDNA with
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
histones. Which of the following would also be observed by the student?
x, x, x, x, x, x, x, x, x, x, x, x,
a. Asinglecircular chromosome
x, x, x,
b. A nucleus x,
c. Free-floatingnuclear material x, x,
d. Noorganelles x,
ANS:B x,
Thecelldescribed isaeukaryoticcell, so it hashistonesandasupercoiled DNAwithinits nucleus; thus,
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
the nucleus should be observed.
x, x, x, x, x,
Asinglecircular chromosome ischaracteristic ofprokaryotic cells, whichdo not havehistones.
x, x, x, x, x, x, x, x, x, x, x, x, x,
Free-floatingnuclearmaterialdescribesaprokaryoticcell,whichwouldnothaveadistinct nucleus. x, x, x, x, x, x, x, x, x, x, x, x, x,
Eukaryoticcellshavemembraneboundedcellularcomponentscalledorganelles.Noorganelles
x, x, x, x, x, x, x, x, x, x,
describes a prokaryotic cell.
x, x, x, x,
2. Anurse isinstructingthestaffaboutcellularfunctions.Whichcellularfunctionisthenurse
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
describingwhen an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
a. Metabolicabsorption x,
b. Communication
c. Secretion
d. Respiration
,ANS:D x,
Theabilityofthe cellto absorboxygen refers to the cells functionofrespiration.
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthe cellto functionwithin a societyofcells refersto its functionof communication.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthe celltotake in nutrients refers tothe cells functionof metabolic absorption.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthecelltosynthesize newsubstances andsecretethese elsewherereferstothecells function
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
of secretion.
x, x,
3. AeukaryoticcellisundergoingDNAreplication. Inwhichregionofthecellwould most of the
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
genetic information be contained?
x, x, x, x,
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:C x,
Theregionofthecellthat containsgeneticmaterial,includinga largeamountofribonucleic acid, most
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
of the DNA, and DNA-binding proteins, is the nucleolus.
x, x, x, x, x, x, x, x, x,
The mitochondria isthesiteofcellularrespiration.
x, x, x, x, x, x, x,
Theribosomes areinvolved inmanufacturing ofproteins withinthe cell.
x, x, x, x, x, x, x, x, x, x,
Thenucleuscontainsthenucleolus, and it isthenucleolusthatcontains genetic material.
x, x, x, x, x, x, x, x, x, x, x, x, x,
4. Thefluidmosaicmodelforbiologicmembranesdescribesmembranebehavior.Accordingto this
x, x, x, x, x, x, x, x, x, x, x, x,
model, which of the following float singly or as aggregates in the fluid lipid bilayer?
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
a. Peripheralmembraneproteins x, x,
b. Integralmembraneproteins x, x,
, c. Glycoproteins
d. Celladhesion molecules x, x,
ANS:B x,
Integralmembraneproteins float freelyinthe fluid lipid bilayer.
x, x, x, x, x, x, x, x, x,
Peripheralmembraneproteinsarenotembedded inthelayer,but resideatthesurface. Glycoproteins
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
act as cell surface markers.
x, x, x, x, x,
Celladhesion molecules areonthe outside ofthe membrane and allow cells to hooktogether.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
5. Whichofthefollowing canbind to plasma membrane receptors?
x, x, x, x, x, x, x, x, x,
a. Oxygen
b. Ribosomes
c. Amphipathiclipids x,
d. Ligands
ANS:D x,
Ligandsarespecificmoleculesthatcanbindwithreceptorsonthecellmembrane. Oxygen
x, x, x, x, x, x, x, x, x, x, x, x, x,
moves by diffusion; it does not bind to receptors.
x, x, x, x, x, x, x, x, x,
Ribosomesmakeproteinsandarenotinvolvedinbinding. x, x, x, x, x, x, x, x,
Amphipathic lipids are a portion of the cell membrane.
x, x, x, x, x, x, x, x, x,
6. Anurse isreviewingareportfromapatient withmetastaticcancer.Whatfindingwould
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
supportthediagnosisofmetastaticcancer?Alterationsinextracellularmatrixthatinclude:
x, x, x, x, x, x, x, x, x, x, x, x,
a. Decreasedfibronectin x,
b. Increasedcollagen x,
c. Decreasedelastin x,
MULTIPLECHOICE x,
1. Astudent isobservingacellunder themicroscope.ItisobservedtohavesupercoiledDNA with
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
histones. Which of the following would also be observed by the student?
x, x, x, x, x, x, x, x, x, x, x, x,
a. Asinglecircular chromosome
x, x, x,
b. A nucleus x,
c. Free-floatingnuclear material x, x,
d. Noorganelles x,
ANS:B x,
Thecelldescribed isaeukaryoticcell, so it hashistonesandasupercoiled DNAwithinits nucleus; thus,
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
the nucleus should be observed.
x, x, x, x, x,
Asinglecircular chromosome ischaracteristic ofprokaryotic cells, whichdo not havehistones.
x, x, x, x, x, x, x, x, x, x, x, x, x,
Free-floatingnuclearmaterialdescribesaprokaryoticcell,whichwouldnothaveadistinct nucleus. x, x, x, x, x, x, x, x, x, x, x, x, x,
Eukaryoticcellshavemembraneboundedcellularcomponentscalledorganelles.Noorganelles
x, x, x, x, x, x, x, x, x, x,
describes a prokaryotic cell.
x, x, x, x,
2. Anurse isinstructingthestaffaboutcellularfunctions.Whichcellularfunctionisthenurse
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
describingwhen an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
a. Metabolicabsorption x,
b. Communication
c. Secretion
d. Respiration
,ANS:D x,
Theabilityofthe cellto absorboxygen refers to the cells functionofrespiration.
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthe cellto functionwithin a societyofcells refersto its functionof communication.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthe celltotake in nutrients refers tothe cells functionof metabolic absorption.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
Theabilityofthecelltosynthesize newsubstances andsecretethese elsewherereferstothecells function
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
of secretion.
x, x,
3. AeukaryoticcellisundergoingDNAreplication. Inwhichregionofthecellwould most of the
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
genetic information be contained?
x, x, x, x,
a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus
ANS:C x,
Theregionofthecellthat containsgeneticmaterial,includinga largeamountofribonucleic acid, most
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
of the DNA, and DNA-binding proteins, is the nucleolus.
x, x, x, x, x, x, x, x, x,
The mitochondria isthesiteofcellularrespiration.
x, x, x, x, x, x, x,
Theribosomes areinvolved inmanufacturing ofproteins withinthe cell.
x, x, x, x, x, x, x, x, x, x,
Thenucleuscontainsthenucleolus, and it isthenucleolusthatcontains genetic material.
x, x, x, x, x, x, x, x, x, x, x, x, x,
4. Thefluidmosaicmodelforbiologicmembranesdescribesmembranebehavior.Accordingto this
x, x, x, x, x, x, x, x, x, x, x, x,
model, which of the following float singly or as aggregates in the fluid lipid bilayer?
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
a. Peripheralmembraneproteins x, x,
b. Integralmembraneproteins x, x,
, c. Glycoproteins
d. Celladhesion molecules x, x,
ANS:B x,
Integralmembraneproteins float freelyinthe fluid lipid bilayer.
x, x, x, x, x, x, x, x, x,
Peripheralmembraneproteinsarenotembedded inthelayer,but resideatthesurface. Glycoproteins
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
act as cell surface markers.
x, x, x, x, x,
Celladhesion molecules areonthe outside ofthe membrane and allow cells to hooktogether.
x, x, x, x, x, x, x, x, x, x, x, x, x, x, x,
5. Whichofthefollowing canbind to plasma membrane receptors?
x, x, x, x, x, x, x, x, x,
a. Oxygen
b. Ribosomes
c. Amphipathiclipids x,
d. Ligands
ANS:D x,
Ligandsarespecificmoleculesthatcanbindwithreceptorsonthecellmembrane. Oxygen
x, x, x, x, x, x, x, x, x, x, x, x, x,
moves by diffusion; it does not bind to receptors.
x, x, x, x, x, x, x, x, x,
Ribosomesmakeproteinsandarenotinvolvedinbinding. x, x, x, x, x, x, x, x,
Amphipathic lipids are a portion of the cell membrane.
x, x, x, x, x, x, x, x, x,
6. Anurse isreviewingareportfromapatient withmetastaticcancer.Whatfindingwould
x, x, x, x, x, x, x, x, x, x, x, x, x, x,
supportthediagnosisofmetastaticcancer?Alterationsinextracellularmatrixthatinclude:
x, x, x, x, x, x, x, x, x, x, x, x,
a. Decreasedfibronectin x,
b. Increasedcollagen x,
c. Decreasedelastin x,
