BIOCHEM ACS STUDY GUIDE LATEST UPDATED
1.Each gof gthe gfollowing gsubcellular gstructures gcontains gDNA gEXCEPT
A. the gnucleus.
B. ribosomes.
C. chloroplasts.
D. mitochondria.:
g g g g g g gAns>> gB
2.In gplant gand ganimal gcells, gthe gthree-dimensional gintegrity gof gthe
gcell gis gmaintained, gin gpart, gby gan ginternal gnetwork gof gfilaments
gcalled
A. the gcell gwall.
B. the gGolgi gapparatus.
C. the gcytoskeleton.
D. the gendoplasmic greticulum.:
g g gAns>> g gC
3.Of gthe gfollowing, gwhich gare gprokaryotes?
A. viruses
B. bacteria
C. yeast
D. plant gcells:
g g g g g gAns>> g gB
4.G° gfor gthe gconversion gof gglycerol-3-phosphate gto gglycerol g+ gPi gis
g-2.2 gkcal/mole. gThus, gyou gcan gconclude gthat
A. this greaction gwill goccur gspontaneously.
B. this greaction gmay gor gmay gnot goccur gspontaneously, gdepending gon
gthe gactual gconcentrations gof greactants gand gproducts.
C. this greaction gwill gonly goccur gspontaneously gif git gis
gcoupled gto ganother greaction gthat ghas ga gmore gfavorable gG°.
D. this greaction gis gso gstrongly gfavorable gthat git gcould gbe
gcoupled gto gdrive gan gotherwise gunfavorable gcell greaction.: g
g g g g g g g g gAns>> g gB
5.In gmost gbiochemical greactions, gPV gis
1 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
A. negligible
B. positive
C. negative
D. dependent gon gE: g
g g g gAns>> gA
6.According gto gthe gSecond gLaw gof gThermodymnamics,
A. the gtotal gentropy gchange gin gany greaction gthat goccurs gspontaneously
gmust gbe ggreater gthan g0.
B. the gtotal gentropy gchange gin gany greaction gthat goccurs gspontaneously
gmust gbe gless gthan g0.
2 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
C. the gtotal gentropy gof gthe guniverse gremains gconstant.
D. the gtotal gentropy gof gthe guniverse gis galways gdecreasing.:
g g g gAns>> g gA
7.Which gof gthe gfollowing gis gtrue?
A. Liquid gand gsolid gwater ghave gthe gsame gnumber gof ghydrogen gbonds
gper gmolecule gof gwater
B. Liquid gwater ghas gmore ghydrogen gbonds gper gmolecule gthan gdoes gsolid
gwater
C. Solid gwater ghas gmore ghydrogen gbonds gper gmolecule gthan gdoes gliquid
gwater
D. Hydrogen gbonding gis ga gmajor gfactor gin gthe gstructure gof ggaseous gwater
E. None gis gtrue:
g g g g g gAns>> g gC
8.What gis gthe gpH gof gan gaqueous gsolution gthat ghas ga g[OH-] gof g3.45 gx g10-5
gM?
A. 3.47
B. 4.47
C. 5.53
D. 9.54
E. none gof gthe gabove: g
g g g gAns>> gD
9.A gpeptide gwas gfound gto ghave ga gmolecular gmass gof gabout g650 gand gupon
ghydrolysis gproduced gAla, gCys, gLys, gPhe, gand gVal gin ga g1:1:1:1:1 gratio. gThe
gpeptide gupon gtreatment gwith gSanger's greagent gproduced gDNP-Cys gand
gexposure gto gcarboxypeptidase gproduced gvaline. gChymotrypsin gtreatment
gof gthe gpeptide gproduced ga gdipeptide gthat gcontained gsulfur gand ghas ga gUV
gabsorbance, gand
a gtripeptide. gExposure gof gthe gpeptide gto gtrypsin gproduced ga gdipeptide gand
gtripeptide. gDeduce gthe gsequence gof gthe gpeptide.
A. Val-Ala-Lys-Phe-Cys
B. Cys-Lys-Phe-Ala-Val
C. Cys-Ala-Lys-Phe-Val
D. Cys-Phe-Lys-Ala-Val
E. Val-Phe-Lys-Ala-Cys:
g g g g g gAns>> g gD
3 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
10.Which gamino gacid ghas gan gR-group gpKa gclosest gto gphysiological gpH?
A. lysine
B. histidine
C. glutamate
D. arginine
E. aspartate:
g g g gAns>> g gB
11.Which gis gtrue gregarding gthe gorientation gof gthe gR-groups gin gbeta
gstructures?
A. In gthe gparallel gbeta gsheet gstructures gthe gamino gacid gR-groups gare gall
gon gthe gsame gside gof gthe gsheet.
B. In gthe gantiparallel gbeta gsheet gstructure gthe gR-groups gon galternate
gstrands gare gon gthe gsame gside gof gthe gsheet.
C. In gparallel gand gantiparallel gsheets gconsecutive gR-groups gon geach
gpeptide
4 g/
g51
1.Each gof gthe gfollowing gsubcellular gstructures gcontains gDNA gEXCEPT
A. the gnucleus.
B. ribosomes.
C. chloroplasts.
D. mitochondria.:
g g g g g g gAns>> gB
2.In gplant gand ganimal gcells, gthe gthree-dimensional gintegrity gof gthe
gcell gis gmaintained, gin gpart, gby gan ginternal gnetwork gof gfilaments
gcalled
A. the gcell gwall.
B. the gGolgi gapparatus.
C. the gcytoskeleton.
D. the gendoplasmic greticulum.:
g g gAns>> g gC
3.Of gthe gfollowing, gwhich gare gprokaryotes?
A. viruses
B. bacteria
C. yeast
D. plant gcells:
g g g g g gAns>> g gB
4.G° gfor gthe gconversion gof gglycerol-3-phosphate gto gglycerol g+ gPi gis
g-2.2 gkcal/mole. gThus, gyou gcan gconclude gthat
A. this greaction gwill goccur gspontaneously.
B. this greaction gmay gor gmay gnot goccur gspontaneously, gdepending gon
gthe gactual gconcentrations gof greactants gand gproducts.
C. this greaction gwill gonly goccur gspontaneously gif git gis
gcoupled gto ganother greaction gthat ghas ga gmore gfavorable gG°.
D. this greaction gis gso gstrongly gfavorable gthat git gcould gbe
gcoupled gto gdrive gan gotherwise gunfavorable gcell greaction.: g
g g g g g g g g gAns>> g gB
5.In gmost gbiochemical greactions, gPV gis
1 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
A. negligible
B. positive
C. negative
D. dependent gon gE: g
g g g gAns>> gA
6.According gto gthe gSecond gLaw gof gThermodymnamics,
A. the gtotal gentropy gchange gin gany greaction gthat goccurs gspontaneously
gmust gbe ggreater gthan g0.
B. the gtotal gentropy gchange gin gany greaction gthat goccurs gspontaneously
gmust gbe gless gthan g0.
2 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
C. the gtotal gentropy gof gthe guniverse gremains gconstant.
D. the gtotal gentropy gof gthe guniverse gis galways gdecreasing.:
g g g gAns>> g gA
7.Which gof gthe gfollowing gis gtrue?
A. Liquid gand gsolid gwater ghave gthe gsame gnumber gof ghydrogen gbonds
gper gmolecule gof gwater
B. Liquid gwater ghas gmore ghydrogen gbonds gper gmolecule gthan gdoes gsolid
gwater
C. Solid gwater ghas gmore ghydrogen gbonds gper gmolecule gthan gdoes gliquid
gwater
D. Hydrogen gbonding gis ga gmajor gfactor gin gthe gstructure gof ggaseous gwater
E. None gis gtrue:
g g g g g gAns>> g gC
8.What gis gthe gpH gof gan gaqueous gsolution gthat ghas ga g[OH-] gof g3.45 gx g10-5
gM?
A. 3.47
B. 4.47
C. 5.53
D. 9.54
E. none gof gthe gabove: g
g g g gAns>> gD
9.A gpeptide gwas gfound gto ghave ga gmolecular gmass gof gabout g650 gand gupon
ghydrolysis gproduced gAla, gCys, gLys, gPhe, gand gVal gin ga g1:1:1:1:1 gratio. gThe
gpeptide gupon gtreatment gwith gSanger's greagent gproduced gDNP-Cys gand
gexposure gto gcarboxypeptidase gproduced gvaline. gChymotrypsin gtreatment
gof gthe gpeptide gproduced ga gdipeptide gthat gcontained gsulfur gand ghas ga gUV
gabsorbance, gand
a gtripeptide. gExposure gof gthe gpeptide gto gtrypsin gproduced ga gdipeptide gand
gtripeptide. gDeduce gthe gsequence gof gthe gpeptide.
A. Val-Ala-Lys-Phe-Cys
B. Cys-Lys-Phe-Ala-Val
C. Cys-Ala-Lys-Phe-Val
D. Cys-Phe-Lys-Ala-Val
E. Val-Phe-Lys-Ala-Cys:
g g g g g gAns>> g gD
3 g/
g51
,BIOCHEM ACS STUDY GUIDE LATEST UPDATED
10.Which gamino gacid ghas gan gR-group gpKa gclosest gto gphysiological gpH?
A. lysine
B. histidine
C. glutamate
D. arginine
E. aspartate:
g g g gAns>> g gB
11.Which gis gtrue gregarding gthe gorientation gof gthe gR-groups gin gbeta
gstructures?
A. In gthe gparallel gbeta gsheet gstructures gthe gamino gacid gR-groups gare gall
gon gthe gsame gside gof gthe gsheet.
B. In gthe gantiparallel gbeta gsheet gstructure gthe gR-groups gon galternate
gstrands gare gon gthe gsame gside gof gthe gsheet.
C. In gparallel gand gantiparallel gsheets gconsecutive gR-groups gon geach
gpeptide
4 g/
g51
