Bio-chemistry Test bank ALL ANSWERS 100% CORRECT
l l l l l l
LATEST SOLUTION FOR 2022 EDITION GUARANTEED
l l l l l
GRADE A+ l
Contents
Chapterl1 IntroductionltolBiochemistry 1
Chapterl2 Water 10
Chapterl3 AminolAcidslandlthelPrimarylStructuresloflProteins 27
Chapterl4 Proteins:lThree-DimensionallStructurelandlFunction 46
Chapterl5 PropertiesloflEnzymes 65
Chapterl6 MechanismsloflEnzymes 85
Chapterl7 CoenzymeslandlVitamins 104
Chapterl8 Carbohydrates 119
Chapterl9 LipidslandlMembranes 137
Chapterl10 IntroductionltolMetabolism 153
Chapterl11 Glycolysis 169
Chapterl12 Gluconeogenesis,lThelPentoselPhosphatelPathway,
andlGlycogenlMetabolism 185
Chapterl13 ThelCitriclAcidlCycle 199
Chapterl14 ElectronlTransportlandlOxidativelPhosphorylation 213
Chapterl15 Photosynthesis 227
Chapterl16 LipidlMetabolism 241
Chapterl17 AminolAcidlMetabolism 256
Chapterl18 NucleotidelMetabolism 269
Chapterl19 NucleiclAcids 284
Chapterl20 DNAlReplication,lRepair,landlRecombination 300
Chapterl21 TranscriptionlandlRNAlProcessing 315
Chapterl22 ProteinlSynthesis 330
Chapterl23 RecombinantlDNAlTechnology 348
,Chapter 1 Introduction to Biochemistry
l l l
1) Whichl elementslaccountl forl morel thanl97%loflthelweightl oflmostlorganisms?
A) C,l H,lN,lMg,lO,l S
B) C,l H,lN,lO,l P,lS
C) C,l H,lN
D) Fe,lC,l H,lO,l P
E) Ca2+,lK+,lNa+,lMg2+,lCl-
Answer:l B
PagelRef:l Sectionl 2
2) Proteinslinlbiologicallmembranesl maylbe
A) porous.
B) attachedltolthelmembranel surface.
C) spanl thel membrane.
D) Allloflthelabove
E) BlandlClonly
Answer:l D
PagelRef:l Sectionl 3
3) Whichl statementlaboutl celluloselislfalse?
A) Itl islthelmostlabundantl polysaccharidel inlnature.
B) Itslmonomersl areljoinedl bylglycosidiclbonds.
C) Itl islpresentlinlthelstemsloflfloweringlplants.
D) Thelhydroxyllgroupsloflneighboringlcelluloselmoleculeslinteractltolformlstrong,linsolublelfibe
rs.
E) Itl islal branchedlpolymerloflglucose.
Answer:l E
PagelRef:l Sectionl 3
1
,4) WhenlKeqloflal reactionl=l1,lthen
A) thelforwardlreactionlislfasterlthanl thelreversel reaction.
B) thelreversel reactionlislfasterlthanl thelforwardl reaction.
C) thelforwardlandlreversel reactionlratelconstantslarel equal.
D) morel productslarel formedlthanl reactants.
E) fewerl productslarel formedlthanl reactants.
Answer:l C
PagelRef:l Sectionl 4
5) Whichlstatementlisltruelaboutl al reactionlwithlanlequilibriumlconstant,l Keq,lequall tol1000?
A) Thel forwardlratelconstantl isl1000ltimeslgreaterl thanl thelreversel ratelconstant.
B) Thelforwardlratelconstantl isl3l timeslgreaterl thanlreverselratelconstant.
C) Thel forwardlratelconstantl isl1000ltimeslsmallerlthanlthelreversel ratelconstant.
D) Thel forwardlratelconstantl isl3l timeslsmallerlthanl thelreversel ratelconstant.
E) Therelislnotl enoughl informationl givenltolcomparelthelforwardlandlreversel ratelconstants.
Answer:l A
PagelRef:l Sectionl 4
6) Thel studyl oflthelenergyl changesl duringl metaboliclreactionsl islcalled .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biologicallheatl dynamics
Answer:l D
PagelRef:l Sectionl 4
7) Alspontaneousl chemicall reactionlalwaysl hasl a change.
A) positivel Gibbʹslfreel energy
B) negativelGibbʹslfreel energy
C) positivel enthalpy
D) negativelenthalpy
E) positivelentropy
Answer:l B
PagelRef:l Sectionl 4
2
, 8) Prokaryoteslarelvaluableltoolsl forl biochemistslbecause
A) E.lcolilislwell-studiedl andltypicalloflprokaryotes.
B) theylcontainl aslmanylgeneslasleukaryoticlcells.
C) manyl ofltheirl chromosomeslarel sequenced.
D) theylarelnotl veryldiverselorganisms.
E) Allloflthelabove
Answer:l C
PagelRef:l Sectionl 6
9) Whichlcellularlcomponentlcarriesloutloxidationlreactions,lsomeloflwhichlproducelhydrogenlper
oxide?
A) peroxisomes
B) mitochondria
C) chloroplasts
D) lysosomes
E) vacuoles
Answer:l A
PagelRef:l Sectionl 8
10) WhylislitlimportantlthatlthelenzymeslinllysosomeslarelmorelactivelatlacidiclpHlthanlatlneutrallpH?
A) Sincellysosomeslarelprimarilylfoundlinlthelstomachlacidloflmammals,ltheirlpHlde
pendencelallowslforlmaximumlefficiencylforltheldigestionloflfoodstuffs.
B) Itl preventsltheirldiffusionloutloflthellysosomes.
C) Itl maximizesl thelinteractionlwithltheirl substratesl whichl arelalwaysl bases.
D) Itl preventsltheml fromlaccidentallyldegradingl thelmacromoleculesl inlthelcytosol.
E) Itl allowsl forl regulationl ofltheirl uptakel bylthelmitochondria.
Answer:l D
PagelRef:l Sectionl 8
11) Moleculeslfromllivinglcellslcannotlbelsynthesizedloutsidelofllivinglcells.lAn
swer:l FALSE
PagelRef:l Sectionl 1
12) Fermentationlinlthelabsenceloflcellsldemonstratedlthatlmetaboliclprocesseslwerelchemicallinlnat
ure.
Answer:l TRUE
PagelRef:l Sectionl 1
3
l l l l l l
LATEST SOLUTION FOR 2022 EDITION GUARANTEED
l l l l l
GRADE A+ l
Contents
Chapterl1 IntroductionltolBiochemistry 1
Chapterl2 Water 10
Chapterl3 AminolAcidslandlthelPrimarylStructuresloflProteins 27
Chapterl4 Proteins:lThree-DimensionallStructurelandlFunction 46
Chapterl5 PropertiesloflEnzymes 65
Chapterl6 MechanismsloflEnzymes 85
Chapterl7 CoenzymeslandlVitamins 104
Chapterl8 Carbohydrates 119
Chapterl9 LipidslandlMembranes 137
Chapterl10 IntroductionltolMetabolism 153
Chapterl11 Glycolysis 169
Chapterl12 Gluconeogenesis,lThelPentoselPhosphatelPathway,
andlGlycogenlMetabolism 185
Chapterl13 ThelCitriclAcidlCycle 199
Chapterl14 ElectronlTransportlandlOxidativelPhosphorylation 213
Chapterl15 Photosynthesis 227
Chapterl16 LipidlMetabolism 241
Chapterl17 AminolAcidlMetabolism 256
Chapterl18 NucleotidelMetabolism 269
Chapterl19 NucleiclAcids 284
Chapterl20 DNAlReplication,lRepair,landlRecombination 300
Chapterl21 TranscriptionlandlRNAlProcessing 315
Chapterl22 ProteinlSynthesis 330
Chapterl23 RecombinantlDNAlTechnology 348
,Chapter 1 Introduction to Biochemistry
l l l
1) Whichl elementslaccountl forl morel thanl97%loflthelweightl oflmostlorganisms?
A) C,l H,lN,lMg,lO,l S
B) C,l H,lN,lO,l P,lS
C) C,l H,lN
D) Fe,lC,l H,lO,l P
E) Ca2+,lK+,lNa+,lMg2+,lCl-
Answer:l B
PagelRef:l Sectionl 2
2) Proteinslinlbiologicallmembranesl maylbe
A) porous.
B) attachedltolthelmembranel surface.
C) spanl thel membrane.
D) Allloflthelabove
E) BlandlClonly
Answer:l D
PagelRef:l Sectionl 3
3) Whichl statementlaboutl celluloselislfalse?
A) Itl islthelmostlabundantl polysaccharidel inlnature.
B) Itslmonomersl areljoinedl bylglycosidiclbonds.
C) Itl islpresentlinlthelstemsloflfloweringlplants.
D) Thelhydroxyllgroupsloflneighboringlcelluloselmoleculeslinteractltolformlstrong,linsolublelfibe
rs.
E) Itl islal branchedlpolymerloflglucose.
Answer:l E
PagelRef:l Sectionl 3
1
,4) WhenlKeqloflal reactionl=l1,lthen
A) thelforwardlreactionlislfasterlthanl thelreversel reaction.
B) thelreversel reactionlislfasterlthanl thelforwardl reaction.
C) thelforwardlandlreversel reactionlratelconstantslarel equal.
D) morel productslarel formedlthanl reactants.
E) fewerl productslarel formedlthanl reactants.
Answer:l C
PagelRef:l Sectionl 4
5) Whichlstatementlisltruelaboutl al reactionlwithlanlequilibriumlconstant,l Keq,lequall tol1000?
A) Thel forwardlratelconstantl isl1000ltimeslgreaterl thanl thelreversel ratelconstant.
B) Thelforwardlratelconstantl isl3l timeslgreaterl thanlreverselratelconstant.
C) Thel forwardlratelconstantl isl1000ltimeslsmallerlthanlthelreversel ratelconstant.
D) Thel forwardlratelconstantl isl3l timeslsmallerlthanl thelreversel ratelconstant.
E) Therelislnotl enoughl informationl givenltolcomparelthelforwardlandlreversel ratelconstants.
Answer:l A
PagelRef:l Sectionl 4
6) Thel studyl oflthelenergyl changesl duringl metaboliclreactionsl islcalled .
A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biologicallheatl dynamics
Answer:l D
PagelRef:l Sectionl 4
7) Alspontaneousl chemicall reactionlalwaysl hasl a change.
A) positivel Gibbʹslfreel energy
B) negativelGibbʹslfreel energy
C) positivel enthalpy
D) negativelenthalpy
E) positivelentropy
Answer:l B
PagelRef:l Sectionl 4
2
, 8) Prokaryoteslarelvaluableltoolsl forl biochemistslbecause
A) E.lcolilislwell-studiedl andltypicalloflprokaryotes.
B) theylcontainl aslmanylgeneslasleukaryoticlcells.
C) manyl ofltheirl chromosomeslarel sequenced.
D) theylarelnotl veryldiverselorganisms.
E) Allloflthelabove
Answer:l C
PagelRef:l Sectionl 6
9) Whichlcellularlcomponentlcarriesloutloxidationlreactions,lsomeloflwhichlproducelhydrogenlper
oxide?
A) peroxisomes
B) mitochondria
C) chloroplasts
D) lysosomes
E) vacuoles
Answer:l A
PagelRef:l Sectionl 8
10) WhylislitlimportantlthatlthelenzymeslinllysosomeslarelmorelactivelatlacidiclpHlthanlatlneutrallpH?
A) Sincellysosomeslarelprimarilylfoundlinlthelstomachlacidloflmammals,ltheirlpHlde
pendencelallowslforlmaximumlefficiencylforltheldigestionloflfoodstuffs.
B) Itl preventsltheirldiffusionloutloflthellysosomes.
C) Itl maximizesl thelinteractionlwithltheirl substratesl whichl arelalwaysl bases.
D) Itl preventsltheml fromlaccidentallyldegradingl thelmacromoleculesl inlthelcytosol.
E) Itl allowsl forl regulationl ofltheirl uptakel bylthelmitochondria.
Answer:l D
PagelRef:l Sectionl 8
11) Moleculeslfromllivinglcellslcannotlbelsynthesizedloutsidelofllivinglcells.lAn
swer:l FALSE
PagelRef:l Sectionl 1
12) Fermentationlinlthelabsenceloflcellsldemonstratedlthatlmetaboliclprocesseslwerelchemicallinlnat
ure.
Answer:l TRUE
PagelRef:l Sectionl 1
3
