BSC 1010 FINAL EXAM REVIEW
mk mk mk mk
QUESTIONS WITH VERIFIED ANSWERS mk mk mk
(ALREADY GRADED A+)
mk mk mk
Put m k the mk steps mk of mk the mkprocess mk of m k signal mk transduction mk in mk the mk order mk they mk occur:
1. A mkconformational mkchange mkin mkthe mksignal-receptor mkcomplex mkactivates mk an mkenzyme.
2. Protein mkkinases mk are mkactivated.
3. A m k signal m k molecule mk binds m k to m k a m k receptor.
4. Target mkproteins mkare mkphosphorylated.
5. Second mkmessenger mkmolecules mkare mkreleased. mk- mkcorrect mkanswer-3,1,5,2,4
Integrins mkare mkintegral mkmembrane mkproteins. mkThey mkare mkoften mkattached mkto mk . mk-
mkcorrect mkanswer- mkcytoskeletal mkproteins mkand mkproteins mkin mkthe mkextracellular mkmatrix
Phosphorylation mkcascade mkinvolving mka mkseries mkof mkprotein mkkinases mkare mkuseful mkfor mkcellular mksignal
mktransduction mkbecause mkthey . mk- mkcorrect mkanswer-amplify mkthe mkoriginal mksignal mkmany mktimes
The mkreceptors mkdoe mksteroid mkhormones mkare mklocated mkinside mkthe mkcell mkinstead mkof mkon mkthe
mkmembrane mksurface mklik m k e mkmost mkother mksignal mkreceptors. mkThis mkis mkNOT mka mkproblem mkfor
mksteroids mkbecause . mk-
correct mk answer-
steroid mkhormones mkare mklipid mksoluble, mkso mkthey mkcan mkreadily mkdiffuse mkthrough mkthe mklipid mkbilayer mkon
mkthe mkcell mkme mkmbrane.
Which mkstateerning mkhow mkthe mkmolecular mkcomposition mkof mka mkplant mkcell mkwall mkcompare mkwith mkthe
mkextracellular mkmatrix mkof mkanimal mkcells? mk- mkcorrect mkanswer-
Plant mk cell mkwall mkfibers mkconsist mk primarily mkof mkcarbohydrates mkECM mkfibers mkare mkdominated mkby
mk proteins.
The mkstructure mkthat mkanchors mkadjacent mkepithelial mkcells mkvia mktheir mkcytoskeleton mkis mkthe mk
-
mkcorrect mkanswer-desmosome
Activated mksignal mkreceptors mkon mkthe mkplasma mkmembrane mkcan mkcarry mkout mkwhich mktwo
mkactivities? mk- mkcorrect mkanswer-Catalyze mkreceptor mkphosphorylation; mkactivate mkG mkproteins
, Different mkcell mktypes mkcan mkrespond mkdifferently mkto mkthe mksame mksignaling mkmolecule mkbecause mk
.
mk- mkcorrect mkanswer-each mkcell mktype mkconverts mkthe mksignal mkto mka mkdifferent mkmetabolite.
When mka mklipid- mksoluble mkhormone mkenters mka mkcell mkand mkbinds mka mkreceptor, mkwhat mkhappens mkto mkthe
mkreceptor? mk- mkcorrect mkanswer-It mkenters mkthe mknucleus mkand mkactivates mkgenes.
Signaling mkpathways mkalways mkwork mkin mkcomplete mkisolation mkfrom mkone mkanother. mk- mkcorrect mkanswer-
False
In mk eukaryotic mk cells, m k chromosomes m k are m k composed mkof m k . mk- mk correct mk answer-DNA mk and mk proteins
Forms mkof mkthe mkRas mkprotein mkfound mkin mktumors mkwould mkcause mkwhich mkof mkthe mkfollowing? mk-
mkcorrect mkanswer- mkDNA mkreplication mkto mkbe mkhyperactive.
The mkmitotic mkspindle mkis mka mkmicro mktubular mkstructure mkthat mkis mkinvolved mkin mk . mk- mkcorrect
mkanswer- mkseparation mkof mksister mkchromatids.
What mkis mkthe mkstructure mkof mkmitosis mkpromoting mkfactor mk(mpf)? mk-
mkcorrect mkanswer- mkA mkcyclin mkprotein mkbound mkto mka mkcyclin-dependent
mkkinase.
Which mkof mkthe mkfollowing mkwould mkbe mkused mkto mkdifferentiate mkbetween mkbenign mkand
mkmalignant mktumors? mk- mkcorrect mkanswer-The mkability mkto mkinvade mkother mktissues
Most mkcancer mkcells mkhave mkdefects mkin mkeither mkgrowth mksignaling mkpathways mkor mkcell mkcycle mkcontrol
mkprocesses. mk- mkcorrect mkanswer-True
What mk is mk the mk spindle mk apparatus? mk - mk correct mk answer-
The mkmicrotubule mk structure mkthat mkseparates mkchromosomes
The mkprocess mkof mkcytokinesis mkoccurs mkdifferently mkin mkplants mkand mkanimals. mk- mkcorrect mkanswer-True
Proteins mkthat mkare mkinvolved mkin mkthe mkregulation mkof mkthe mkcell mkcycle mkand mkthat mkshow mkfluctuations
mkin mkconcentratio m k n mkduring mkthe mkcell mkcycle mkare mkcalled mk . mk- mkcorrect mkanswer-cyclins
mk mk mk mk
QUESTIONS WITH VERIFIED ANSWERS mk mk mk
(ALREADY GRADED A+)
mk mk mk
Put m k the mk steps mk of mk the mkprocess mk of m k signal mk transduction mk in mk the mk order mk they mk occur:
1. A mkconformational mkchange mkin mkthe mksignal-receptor mkcomplex mkactivates mk an mkenzyme.
2. Protein mkkinases mk are mkactivated.
3. A m k signal m k molecule mk binds m k to m k a m k receptor.
4. Target mkproteins mkare mkphosphorylated.
5. Second mkmessenger mkmolecules mkare mkreleased. mk- mkcorrect mkanswer-3,1,5,2,4
Integrins mkare mkintegral mkmembrane mkproteins. mkThey mkare mkoften mkattached mkto mk . mk-
mkcorrect mkanswer- mkcytoskeletal mkproteins mkand mkproteins mkin mkthe mkextracellular mkmatrix
Phosphorylation mkcascade mkinvolving mka mkseries mkof mkprotein mkkinases mkare mkuseful mkfor mkcellular mksignal
mktransduction mkbecause mkthey . mk- mkcorrect mkanswer-amplify mkthe mkoriginal mksignal mkmany mktimes
The mkreceptors mkdoe mksteroid mkhormones mkare mklocated mkinside mkthe mkcell mkinstead mkof mkon mkthe
mkmembrane mksurface mklik m k e mkmost mkother mksignal mkreceptors. mkThis mkis mkNOT mka mkproblem mkfor
mksteroids mkbecause . mk-
correct mk answer-
steroid mkhormones mkare mklipid mksoluble, mkso mkthey mkcan mkreadily mkdiffuse mkthrough mkthe mklipid mkbilayer mkon
mkthe mkcell mkme mkmbrane.
Which mkstateerning mkhow mkthe mkmolecular mkcomposition mkof mka mkplant mkcell mkwall mkcompare mkwith mkthe
mkextracellular mkmatrix mkof mkanimal mkcells? mk- mkcorrect mkanswer-
Plant mk cell mkwall mkfibers mkconsist mk primarily mkof mkcarbohydrates mkECM mkfibers mkare mkdominated mkby
mk proteins.
The mkstructure mkthat mkanchors mkadjacent mkepithelial mkcells mkvia mktheir mkcytoskeleton mkis mkthe mk
-
mkcorrect mkanswer-desmosome
Activated mksignal mkreceptors mkon mkthe mkplasma mkmembrane mkcan mkcarry mkout mkwhich mktwo
mkactivities? mk- mkcorrect mkanswer-Catalyze mkreceptor mkphosphorylation; mkactivate mkG mkproteins
, Different mkcell mktypes mkcan mkrespond mkdifferently mkto mkthe mksame mksignaling mkmolecule mkbecause mk
.
mk- mkcorrect mkanswer-each mkcell mktype mkconverts mkthe mksignal mkto mka mkdifferent mkmetabolite.
When mka mklipid- mksoluble mkhormone mkenters mka mkcell mkand mkbinds mka mkreceptor, mkwhat mkhappens mkto mkthe
mkreceptor? mk- mkcorrect mkanswer-It mkenters mkthe mknucleus mkand mkactivates mkgenes.
Signaling mkpathways mkalways mkwork mkin mkcomplete mkisolation mkfrom mkone mkanother. mk- mkcorrect mkanswer-
False
In mk eukaryotic mk cells, m k chromosomes m k are m k composed mkof m k . mk- mk correct mk answer-DNA mk and mk proteins
Forms mkof mkthe mkRas mkprotein mkfound mkin mktumors mkwould mkcause mkwhich mkof mkthe mkfollowing? mk-
mkcorrect mkanswer- mkDNA mkreplication mkto mkbe mkhyperactive.
The mkmitotic mkspindle mkis mka mkmicro mktubular mkstructure mkthat mkis mkinvolved mkin mk . mk- mkcorrect
mkanswer- mkseparation mkof mksister mkchromatids.
What mkis mkthe mkstructure mkof mkmitosis mkpromoting mkfactor mk(mpf)? mk-
mkcorrect mkanswer- mkA mkcyclin mkprotein mkbound mkto mka mkcyclin-dependent
mkkinase.
Which mkof mkthe mkfollowing mkwould mkbe mkused mkto mkdifferentiate mkbetween mkbenign mkand
mkmalignant mktumors? mk- mkcorrect mkanswer-The mkability mkto mkinvade mkother mktissues
Most mkcancer mkcells mkhave mkdefects mkin mkeither mkgrowth mksignaling mkpathways mkor mkcell mkcycle mkcontrol
mkprocesses. mk- mkcorrect mkanswer-True
What mk is mk the mk spindle mk apparatus? mk - mk correct mk answer-
The mkmicrotubule mk structure mkthat mkseparates mkchromosomes
The mkprocess mkof mkcytokinesis mkoccurs mkdifferently mkin mkplants mkand mkanimals. mk- mkcorrect mkanswer-True
Proteins mkthat mkare mkinvolved mkin mkthe mkregulation mkof mkthe mkcell mkcycle mkand mkthat mkshow mkfluctuations
mkin mkconcentratio m k n mkduring mkthe mkcell mkcycle mkare mkcalled mk . mk- mkcorrect mkanswer-cyclins
