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Bio 93 Midterm 2 Review Exam Questions and Answers
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Bio 93 Midterm 2 Review Exam Questions and Answers
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Bio 93 Midterm 2 Review ExamQuestions and Answers
Beginning iiwithin iithe iinucleus, iithe iifirst iistep iileading iito iithe iisynthesis iiof iia
iipolypeptide iiis ii_____. ii- iiAnswers ii-transferring iiof iiinformation iifrom iiDNA iito
iimessenger iiRNA
What iiis iithe iifirst iiof iithe iitwo iimain iisteps iiof iiprotein iisynthesis? ii- iiAnswers ii-
Transcription
Which iimolecules iido iinot iinormally iicross iithe iinuclear iimembrane? ii- iiAnswers ii-DNA
True iior iiFalse: iiThe iinuclear iienvelope iiis iicontinuous iiwith iithe iigolgi iiapparatus ii-
iiAnswers ii-False; iithe iinuclear iienvelope iiis iicontinuous iiwith iithe iiER
True iior iifalse? iiLarge iiproteins iicontaining iia iinuclear iilocalization iisignal ii(NLS) iibind iito
iithe iinuclear iipore iiand iienter iithe iinucleus iiwithout iiany iiexpenditure iiof iienergy. ii-
iiAnswers ii-False; iiCytoplasmic iiproteins iicalled iiimportins iibind iito iilarge iiproteins
iicontaining iian iiNLS iiand iimediate iitheir iitransport iiacross iithe iinuclear iimembrane
iithrough iian iiactive iitransport ii(energy-requiring) iiprocess.
A iismall iiprotein ii(molecular iiweight ii= ii25,000 iidaltons) iiis iiinjected iiinto iia iicell iiand
iiobserved iiin iithe iinucleus iia iishort iitime iilater. iiWhat iitype iiof iitransport iihas iitaken
iiplace? ii- iiAnswers ii-Passive iitransport; iiit iiis iismall iienough iito iidiffuse iithrough iinuclear
iipores
In iiexperiments iito iitest iiwhether iia iiprotein iican iienter iithe iinucleus, iiwhy iiwould
iiproteins iibe iilabeled iiwith iifluorescent iimolecules? ii- iiAnswers ii-To iimake iithe iiprotein
iieasy iito iisee
What iido iifluorescent iitags iido? ii- iiAnswers ii-Make iithe iilocation iiof iithe iiproteins iieasy
iito iivisualize
Nucleoplasmin iiis iia iinuclear iiprotein. iiThis iiprotein iiwas iidivided iiinto iitwo iisegments
iiand iilinked iito iithe iisame iilarge iicytoplasmic iiprotein, iigenerating iitwo iifusion iiproteins.
iiAfter iiinjecting iithese iifusion iiproteins iiinto iia iicell, iione iiof iithe iiproteins iiwas iifound iiin
iithe iinucleus iiand iithe iiother iiin iithe iicytoplasm. iiWhich iiof iithe iifollowing iiconclusions
,iican iibe iidrawn iifrom iithese iiresults? ii- iiAnswers ii-Only iione iiof iithe iitwo iifusion iiproteins
iipossesses iia iinuclear iilocalization iisignal; iithe iinuclear iilocalization iisignal iiis iionly
iipresent iiin iithe iifusion iiprotein iithat iienters iithe iinucleus
Which iiorganelle iiplays iia iirole iiin iiintracellular iidigestion? ii- iiAnswers ii-Lysosome
What iiis iithe iifunction iiof iithe iismooth iiER? ii- iiAnswers ii-Lipid iisynthesis, iipoison
iidetoxification, iicalcium iiion iistorage
What iiis iithe iifunction iiof iithe iirough iiER? ii- iiAnswers ii-Protein iisynthesis
What iiis iithe iifunction iiof iithe iigolgi iiapparatus? ii- iiAnswers ii-Protein iimodification iiand
iisorting, iicisternal iimaturation
What iiis iithe iifunction iiof iia iilysosome? ii- iiAnswers ii-Macromolecule
iidigestion/hydrolysis, iiautophagy
Where iiare iithe iienzymes iiand iimembranes iiof iia iilysosome iimade? ii- iiAnswers ii-Rough
iiER iiand iigolgi iiapparatus
What iiproteins iiare iisynthesized iiby iibound iiribosomes? ii- iiAnswers ii-Lysosomal
iienzyme, iiER iiprotein, iiinsulin
Where iiare iiproteins iithat iifunction iiin iithe iicytosol iior iiin iithe iinucleus iisynthesized? ii-
iiAnswers ii-Free iiribosomes
Where iiare iiproteins iithat iifunction iiwithin iithe iiendomembrane iisystem iior iithose
iidestined iifor iisecretion iisynthesized? ii- iiAnswers ii-Bound iiribosomes
What iiis iithe iipathway iithat iia iisecretory iiprotein iifollows iifrom iisynthesis iito iisecretion? ii-
iiAnswers ii-Protein iisynthesis ii- iiER ii- iicis iiGolgi iicisterane ii- iimedial iigolgi iicisternae ii-
iitrans iigolgi iicisternae ii- iiplasma iimembrane ii- iiextracellular iispace
True iior iifalse: iieach iiof iithe iitransport iisteps iifor iia iisecretory iiprotein iirequires
iispecialized iiproteins iito iiensure iicargo iiis iisent iito iithe iiproper iilocation ii- iiAnswers ii-
True
Mitochondria iiare iifound iiin ii____ ii- iiAnswers ii-Plant iiand iianimal iicells
What iidoes iithe iiprokaryotic iicell iicontain iithat iieukaryotes iidon't? ii- iiAnswers ii-Nucleoid
What iidoes iithe iieukaryotic iicell iicontain iithat iiprokaryotes iidon't? ii- iiAnswers ii-
Lysosome, iimitochondria, iinucleolus
In iieukaryotic iiflagella, iithe iifibers iithat iislide iipast iione iianother iidue iito iithe iiactivity iiof
iidynein iiproteins iiare ii- iiAnswers ii-Microtubules
, Many iicell iiorganelles, iimost iinotably iithe iinucleus, iiare iianchored iiby ii___, iiwhich iiare
iiassembled iifrom iia iidiverse iiclass iiof iiproteins ii- iiAnswers ii-Intermediate iifilaments
Centrosomes iiare iisites iiwhere iiprotein iidimers iiassemble iiinto ii- iiAnswers ii-
Microtubules
The iiextension iiof iipseudopodia iiin iiamoeba iiis iidue iito iithe iiregulated iiassembly iiand
iidestruction iiof ii- iiAnswers ii-Microfilaments
The iionly iicytoskeletal iifibers iinot iiassociated iiwith iiintracellular iimovement iior iiwhole
iicell iilocomotion iiare iithe ii- iiAnswers ii-Intermediate iifilaments
During iimuscle iicontractions, iimyosin iimotor iiproteins iimove iiacross iitracks iiof ii-
iiAnswers ii-Microfilaments
Which iiorganelle iicarries iiout iicellular iirespiration? ii- iiAnswers ii-Mitochondrion
What iiis iithe iidouble iimembrane iithat iiencloses iithe iinucleus? ii- iiAnswers ii-Nuclear
iienvelope
The ii___ iiis iicomposed iiof iiDNA iiand iiprotein ii- iiAnswers ii-Chromatin
Ribosomal iisubunits iiare iimanufactured iiby iithe ii- iiAnswers ii-Nucleolus
Where iiis iithe iisite iiof iiprotein iisynthesis? ii- iiAnswers ii-Ribosomes
What iimanufactures iicellular iimembranes iiby iiadding iimembrane iiproteins iiand
iiphospholipids iito iiits iiown iimembrane? ii- iiAnswers ii-Rough iiER
Where iiis iicalcium iistored? ii- iiAnswers ii-Smooth iiER
What iiis iithe iihollow iirods iithat iishape iiand iisupport iithe iicell? ii- iiAnswers ii-Microtubules
What iiplays iia iirole iiin iiorganelle iimovement? ii- iiAnswers ii-Microtubules
What iiare iiidentical iiin iistructure iito iicentrioles? ii- iiAnswers ii-Basal iibodies
What iiorganelle iiproduces iiH2O2 iias iia iiby-product? ii- iiAnswers ii-Peroxisome
What iiprovides iistructural iisupport iifor iithe iicell? ii- iiAnswers ii-Microfilaments
A iisignal iitransduction iipathway iiis iiinitiated iiwhen iia ii____ iibinds iito iia iireceptor ii-
iiAnswers ii-Signal iimolecule
A iisignal iimolecule iiis iialso iiknown iias ii______ ii- iiAnswers ii-Ligand
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