WGU Biochemistry C624 Exam Questions
with complete solutions (2024-2025)
Primary jstructure jconsists jof jthe jorder jof j______ jin ja jprotein. jThese jare jheld
jtogether jwith j______ jbonds jthat jare jformed jby ja j______ jreaction. j- jANS✓✓-
Amino jAcids, jPeptide, jhydration
Several jtypes jof jside jchain jinteractions jstabilize jthe jtertiary jstructure jof
jproteins, jincluding jwhich jof jthe jfollowing? j- jANS✓✓-Ion jpairs, jhydrophobic
jinteractions, jhydrogen jbonds, jdisulfide jbonds
Which jof jthe jfollowing jstatements jis jtrue jabout jthe jsecondary jstructure jof
jproteins? ja. jIt jincludes jalpha jhelices jas ja jcommon jform.
b. jIt jinvolves jhydrogen jbonding jbetween jthe jbackbone jatoms.
c. jAll jof jthese. j
d. jIt jincludes jbeta jpleated jsheets jas ja jcommon jform. j- jANS✓✓-c. jAll jof jthese.
In jorder jto jfulfill jtheir jfunction, jproteins jmust jfold jin jproper, jthree-dimensional
jconformations. jWhich jone jof jthe jfollowing jmolecules, javailable jin ja jcell, jis
jlikely jto jhelp ja jprotein jfold jproperly? j- jANS✓✓-Chaperone
Which jof jthe jfollowing jis jtrue jabout ja jmis-folded jprotein? ja. jAll jof jthese. j
b. jIt jcan jbe jthe jresult jof jdenaturation.
c. jIt jcan jcause jprotein jaggregation.
d. jIt jwill jlose jits jnormal jfunction.
e. jIt jcan jbe jdegraded jby jthe jcell. j- jANS✓✓-Which jof jthe jfollowing jis jtrue
jabout ja jmis-folded jprotein?
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jin jthe
jinterior jof ja jprotein jmost joften?
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jmost
joften jon jthe jexterior jsurface jof ja jprotein?
question jhas j2 janswers
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jmost
joften jon jthe jexterior jsurface jof ja jprotein?
B j- jCarboxylic jacid! jPeptide jbonds jare jformed jbetween jthe jamino jgroup j(A)
jand jcarboxylic jacid jgroup j(B) jof jamino jacids.
,A j- jAmino jgroup! jPeptide jbonds jare jformed jbetween jthe jamino jgroup j(A) jand
jcarboxylic jacid jgroup j(B) jof jamino jacids. j- jANS✓✓-Which jpart(s) jof jthe jamino
jacid jbelow jcan jbe jinvolved jin jpeptide jbond jformation?
Which jpart(s) jof jthe jamino jacid jbelow jcontributes jto jtertiary jstructure
jstabilization?
a. jC j- jAlpha jCarbon
b. jB j- jCarboxylic jAcid
c. jA j- jAmino jgroup
d. jD j- jR jgroup j- jANS✓✓-d. jD j- jR jgroup jTertiary jstructure jis jstabilized jprimarily
jby jinteractions jbetween jdifferent jR jgroups.
Drag jthe jname jof jthe jprotein jstructure jlevel jto jthe jpart jof jthe jamino jacid jthat
jprimarily jcontributes jto jthat jstructure jlevel. jPrimary jStructure
Secondary jStructure
Tertiary jStructure
Quaternary jStructure j- jANS✓✓-Primary jStructure jSecondary jStructure
Tertiary jStructure
Quaternary jStructure
You jare jdesigning ja jpiece jof jDNA jfor ja jproject jand jmust jselect jthe jappropriate
jnitrogenous jbases. jWhich jcombination jof jnitrogenous jbases jwould jyou jfind
jmost jsuitable jfor jyour jwork?
a. jAdenine, jGuanine, jThymine, jCytosine.
b. jThymine, jUracil, jAdenine, jCytosine
c. jAdenine jGuanine, jUracil jand jThymine
d. jAdenine, jThymine, jCytosine, jUracil j- jANS✓✓-a. jAdenine, jGuanine, jThymine,
jCytosine j
These jnitrogenous jbases, jin jcombination jwith jdeoxyribose jsugar jand
jphosphate, jform jthe jnucleotides jthat jare jbonded jtogether jto jform ja jlong
jpolymer jof jDNA j- jthe jcarrier jof jgenetic jinformation.
d. j5'-TACTAGGAA-3' jThe jbases jon jthe jnewly jmade jdaughter jstrand jare
jcomplementary jto jthe jbases jon jthe jtemplate jstrand, jbut jwith jthe jopposite j5'
jand j3' jorientation. j- jANS✓✓-The jDNA jsequence j3'-ATGATCCTT-5' jis jpart jof
jthe jtemplate jstrand jduring jDNA jreplication. jWhich jof jthe jfollowing jwould jbe
jthe jcorrect jsequence jfor jthe jnewly jmade jDNA?
Select jone:
a. j5'-ATGATCCTT-3'
b. j5'-GCAGCTTCC-3'
c. j5'-UACUAGGAA-3'
d. j5'-TACTAGGAA-3
c. jAll jof jthese. jAll jof jthese jstatements jabout jRNA jare jtrue. jThe jcell jcontains
jmRNA, jrRNA, jand jtRNA jmolecules, jRNA jis jsingle jstranded, jRNA jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone, jand jRNA jnucleotides jinclude
jthe jbases jA, jU, jC, jand jG. j- jANS✓✓-a. jRNA jis jsingle jstranded jand jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone.
,b. jRNA jnucleotides jinclude jthe jbases jA, jU, jC, jand jG.
c. jAll jof jthese.
d. jThere jare jseveral jtypes jof jRNA jin jthe jcell, jincluding jmRNA, jrRNA, jand jtRNA.
a. jAdenine, jGuanine, jThymine, jCytosine
These jnitrogenous jbases, jin jcombination jwith jdeoxyribose jsugar jand
jphosphate, jform jthe jnucleotides jthat jare jbonded jtogether jto jform ja jlong
jpolymer jof jDNA j- jthe jcarrier jof jgenetic jinformation. j- jANS✓✓-You jare
jdesigning ja jpiece jof jDNA jfor ja jproject jand jmust jselect jthe jappropriate
jnitrogenous jbases. jWhich jcombination jof jnitrogenous jbases jwould jyou jfind
jmost jsuitable jfor jyour jwork?
Select jone:
a. jAdenine, jGuanine, jThymine, jCytosine
b. jThymine, jUracil, jAdenine, jCytosine
c. jAdenine jGuanine, jUracil jand jThymine
d. jAdenine, jThymine, jCytosine, jUracil
c. j5'-TACTAGGAA-3'
The jbases jon jthe jnewly jmade jdaughter jstrand jare jcomplementary jto jthe jbases
jon jthe jtemplate jstrand, jbut jwith jthe jopposite j5' jand j3' jorientation. j- jANS✓✓-
The jDNA jsequence j3'-ATGATCCTT-5' jis jpart jof jthe jtemplate jstrand jduring jDNA
jreplication. jWhich jof jthe jfollowing jwould jbe jthe jcorrect jsequence jfor jthe jnewly
jmade jDNA?
Select jone:
a. j5'-ATGATCCTT-3'
b. j5'-GCAGCTTCC-3'
c. j5'-TACTAGGAA-3'
d. j5'-UACUAGGAA-3'
b. jAll jof jthese! jAll jof jthese jstatements jabout jRNA jare jtrue. jThe jcell jcontains
jmRNA, jrRNA, jand jtRNA jmolecules, jRNA jis jsingle jstranded, jRNA jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone, jand jRNA jnucleotides jinclude
jthe jbases jA, jU, jC, jand jG. j- jANS✓✓-Which jof jthe jfollowing jstatements jis jTRUE
jabout jRNA?
Select jone:
a. jThere jare jseveral jtypes jof jRNA jin jthe jcell, jincluding jmRNA, jrRNA, jand jtRNA.
b. jAll jof jthese
c. jRNA jis jsingle jstranded jand jcontains ja jribose jsugar jin jthe jsugar-phosphate
jbackbone.
d. jRNA jnucleotides jinclude jthe jbases jA, jU, jC, jand jG.
d. jRNA jpolymerase j- jANS✓✓-In jorder jto jstop jan jinfection jcaused jby jbacteria,
jwhich jof jthe jfollowing jmolecules jwould jyou jtarget jto jkill jthe jbacteria, jwithout
jharming jthe jhuman jcell jwhich jharbors jthe jbacteria?
Select jone:
, a. jRNA jnucleotides j
b. jPhosphodiester jbonds
c. jDNA jnucleotides
d. jRNA jpolymerase
d. jmessenger jRNA j(mRNA) j- jANS✓✓-A jresearch jscientist jis jtrying jto jcreate ja
jnew jstrain jof jbacteria jthat jcan jproduce ja jprotein jneeded jfor jher jresearch.
jWhich jof jthe jfollowing jmolecules jwill jact jas ja jtemplate jin jcreating jthe jprotein?
Select jone:
a. jRibosomal jRNA(rRNA) j
b. jRibozyme
c. jtransfer jRNA j(tRNA)
d. jmessenger jRNA j(mRNA)
C.Production jof jproteins jwould jstop. j- jANS✓✓-What jis jone jdirect jeffect jof
jinhibiting jtranslation?
Select jone:
a. jDNA jwould jno jlonger jbe jreplicated. j
b. jThe jlevel jof jproteins jwould jremain jthe jsame.
c. jProduction jof jproteins jwould jstop.
d. jTranscription jwould jcease.
How jmany jamino jacids, jand jwhich jones, jwould jbe jencoded jby jthe jfollowing
jmRNA jsequence: j5'-AUGACUCCCGGG-3'? j(The jcodon jtable jbelow jcan jassist
jyou.)
a. jThree jamino jacids j- jMet, jIle, jand jArg
b. jFour jamino jacids j- jMet, jLeu, jPro, jVal
c. jFour jamino jacids j- jMet, jThr, jPro jand jGly j
d. jThree jamino jacids j- jMet, jThr, jand jProc. j- jANS✓✓-c. jFour jamino jacids j- jMet,
jThr, jPro jand jGly jAmino jacids jare jcoded jby j3-letter jcodons, jand jthe jsequence
jcontains j12 jnucleotides, jwhich jmeans jis jcodes jfor jfour jamino jacids. jThe jfirst
jis jAUG jfor jMet, jthe jsecond jis jACU jfor jThr, jthe jthird jis jCCC jfor jPro, jand jthe
jfourth jis jGGG jfor jGly.
d. jPromoters jPromoters jare jDNA jsequences jnear jthe jstart jof ja jgene jthat jare
jrecognized jby jtranscription jfactors jwhich jrecruit jRNA jpolymerase jto jthat jgene
jfor jexpression. jThis jis jan jimportant jaspect jof jtranscription, jbut jis jnot jpart jof
jmRNA jprocessing. j5' jcap jaddition jis jan jimportant jmRNA jprocessing jstep jthat
joccurs jsoon jafter jtranscription jof jthe jmRNA jbegins, jand jpoly(A) jaddition jis ja
jprocessing jstep jthat joccurs jsoon jafter jtranscription jof jthe jmRNA jends. jThe
jfinal jstep jof jmRNA jprocessing jis jsplicing j- jremoving jintrons jand jconnecting
jthe jexons jof ja jgene j- jprior jto jthe jexit jof jmRNA jfrom jthe jnucleus jfor
jtranslation. j- jANS✓✓-Which jof jthe jfollowing jis jNOT jpart jof jmRNA jprocessing
jprior jto jtranslation?
Select jone:
a. j5' jcap jaddition
with complete solutions (2024-2025)
Primary jstructure jconsists jof jthe jorder jof j______ jin ja jprotein. jThese jare jheld
jtogether jwith j______ jbonds jthat jare jformed jby ja j______ jreaction. j- jANS✓✓-
Amino jAcids, jPeptide, jhydration
Several jtypes jof jside jchain jinteractions jstabilize jthe jtertiary jstructure jof
jproteins, jincluding jwhich jof jthe jfollowing? j- jANS✓✓-Ion jpairs, jhydrophobic
jinteractions, jhydrogen jbonds, jdisulfide jbonds
Which jof jthe jfollowing jstatements jis jtrue jabout jthe jsecondary jstructure jof
jproteins? ja. jIt jincludes jalpha jhelices jas ja jcommon jform.
b. jIt jinvolves jhydrogen jbonding jbetween jthe jbackbone jatoms.
c. jAll jof jthese. j
d. jIt jincludes jbeta jpleated jsheets jas ja jcommon jform. j- jANS✓✓-c. jAll jof jthese.
In jorder jto jfulfill jtheir jfunction, jproteins jmust jfold jin jproper, jthree-dimensional
jconformations. jWhich jone jof jthe jfollowing jmolecules, javailable jin ja jcell, jis
jlikely jto jhelp ja jprotein jfold jproperly? j- jANS✓✓-Chaperone
Which jof jthe jfollowing jis jtrue jabout ja jmis-folded jprotein? ja. jAll jof jthese. j
b. jIt jcan jbe jthe jresult jof jdenaturation.
c. jIt jcan jcause jprotein jaggregation.
d. jIt jwill jlose jits jnormal jfunction.
e. jIt jcan jbe jdegraded jby jthe jcell. j- jANS✓✓-Which jof jthe jfollowing jis jtrue
jabout ja jmis-folded jprotein?
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jin jthe
jinterior jof ja jprotein jmost joften?
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jmost
joften jon jthe jexterior jsurface jof ja jprotein?
question jhas j2 janswers
j- jANS✓✓-Which jof jthe jfollowing jamino jacids jwould jyou jexpect jto jfind jmost
joften jon jthe jexterior jsurface jof ja jprotein?
B j- jCarboxylic jacid! jPeptide jbonds jare jformed jbetween jthe jamino jgroup j(A)
jand jcarboxylic jacid jgroup j(B) jof jamino jacids.
,A j- jAmino jgroup! jPeptide jbonds jare jformed jbetween jthe jamino jgroup j(A) jand
jcarboxylic jacid jgroup j(B) jof jamino jacids. j- jANS✓✓-Which jpart(s) jof jthe jamino
jacid jbelow jcan jbe jinvolved jin jpeptide jbond jformation?
Which jpart(s) jof jthe jamino jacid jbelow jcontributes jto jtertiary jstructure
jstabilization?
a. jC j- jAlpha jCarbon
b. jB j- jCarboxylic jAcid
c. jA j- jAmino jgroup
d. jD j- jR jgroup j- jANS✓✓-d. jD j- jR jgroup jTertiary jstructure jis jstabilized jprimarily
jby jinteractions jbetween jdifferent jR jgroups.
Drag jthe jname jof jthe jprotein jstructure jlevel jto jthe jpart jof jthe jamino jacid jthat
jprimarily jcontributes jto jthat jstructure jlevel. jPrimary jStructure
Secondary jStructure
Tertiary jStructure
Quaternary jStructure j- jANS✓✓-Primary jStructure jSecondary jStructure
Tertiary jStructure
Quaternary jStructure
You jare jdesigning ja jpiece jof jDNA jfor ja jproject jand jmust jselect jthe jappropriate
jnitrogenous jbases. jWhich jcombination jof jnitrogenous jbases jwould jyou jfind
jmost jsuitable jfor jyour jwork?
a. jAdenine, jGuanine, jThymine, jCytosine.
b. jThymine, jUracil, jAdenine, jCytosine
c. jAdenine jGuanine, jUracil jand jThymine
d. jAdenine, jThymine, jCytosine, jUracil j- jANS✓✓-a. jAdenine, jGuanine, jThymine,
jCytosine j
These jnitrogenous jbases, jin jcombination jwith jdeoxyribose jsugar jand
jphosphate, jform jthe jnucleotides jthat jare jbonded jtogether jto jform ja jlong
jpolymer jof jDNA j- jthe jcarrier jof jgenetic jinformation.
d. j5'-TACTAGGAA-3' jThe jbases jon jthe jnewly jmade jdaughter jstrand jare
jcomplementary jto jthe jbases jon jthe jtemplate jstrand, jbut jwith jthe jopposite j5'
jand j3' jorientation. j- jANS✓✓-The jDNA jsequence j3'-ATGATCCTT-5' jis jpart jof
jthe jtemplate jstrand jduring jDNA jreplication. jWhich jof jthe jfollowing jwould jbe
jthe jcorrect jsequence jfor jthe jnewly jmade jDNA?
Select jone:
a. j5'-ATGATCCTT-3'
b. j5'-GCAGCTTCC-3'
c. j5'-UACUAGGAA-3'
d. j5'-TACTAGGAA-3
c. jAll jof jthese. jAll jof jthese jstatements jabout jRNA jare jtrue. jThe jcell jcontains
jmRNA, jrRNA, jand jtRNA jmolecules, jRNA jis jsingle jstranded, jRNA jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone, jand jRNA jnucleotides jinclude
jthe jbases jA, jU, jC, jand jG. j- jANS✓✓-a. jRNA jis jsingle jstranded jand jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone.
,b. jRNA jnucleotides jinclude jthe jbases jA, jU, jC, jand jG.
c. jAll jof jthese.
d. jThere jare jseveral jtypes jof jRNA jin jthe jcell, jincluding jmRNA, jrRNA, jand jtRNA.
a. jAdenine, jGuanine, jThymine, jCytosine
These jnitrogenous jbases, jin jcombination jwith jdeoxyribose jsugar jand
jphosphate, jform jthe jnucleotides jthat jare jbonded jtogether jto jform ja jlong
jpolymer jof jDNA j- jthe jcarrier jof jgenetic jinformation. j- jANS✓✓-You jare
jdesigning ja jpiece jof jDNA jfor ja jproject jand jmust jselect jthe jappropriate
jnitrogenous jbases. jWhich jcombination jof jnitrogenous jbases jwould jyou jfind
jmost jsuitable jfor jyour jwork?
Select jone:
a. jAdenine, jGuanine, jThymine, jCytosine
b. jThymine, jUracil, jAdenine, jCytosine
c. jAdenine jGuanine, jUracil jand jThymine
d. jAdenine, jThymine, jCytosine, jUracil
c. j5'-TACTAGGAA-3'
The jbases jon jthe jnewly jmade jdaughter jstrand jare jcomplementary jto jthe jbases
jon jthe jtemplate jstrand, jbut jwith jthe jopposite j5' jand j3' jorientation. j- jANS✓✓-
The jDNA jsequence j3'-ATGATCCTT-5' jis jpart jof jthe jtemplate jstrand jduring jDNA
jreplication. jWhich jof jthe jfollowing jwould jbe jthe jcorrect jsequence jfor jthe jnewly
jmade jDNA?
Select jone:
a. j5'-ATGATCCTT-3'
b. j5'-GCAGCTTCC-3'
c. j5'-TACTAGGAA-3'
d. j5'-UACUAGGAA-3'
b. jAll jof jthese! jAll jof jthese jstatements jabout jRNA jare jtrue. jThe jcell jcontains
jmRNA, jrRNA, jand jtRNA jmolecules, jRNA jis jsingle jstranded, jRNA jcontains ja
jribose jsugar jin jthe jsugar-phosphate jbackbone, jand jRNA jnucleotides jinclude
jthe jbases jA, jU, jC, jand jG. j- jANS✓✓-Which jof jthe jfollowing jstatements jis jTRUE
jabout jRNA?
Select jone:
a. jThere jare jseveral jtypes jof jRNA jin jthe jcell, jincluding jmRNA, jrRNA, jand jtRNA.
b. jAll jof jthese
c. jRNA jis jsingle jstranded jand jcontains ja jribose jsugar jin jthe jsugar-phosphate
jbackbone.
d. jRNA jnucleotides jinclude jthe jbases jA, jU, jC, jand jG.
d. jRNA jpolymerase j- jANS✓✓-In jorder jto jstop jan jinfection jcaused jby jbacteria,
jwhich jof jthe jfollowing jmolecules jwould jyou jtarget jto jkill jthe jbacteria, jwithout
jharming jthe jhuman jcell jwhich jharbors jthe jbacteria?
Select jone:
, a. jRNA jnucleotides j
b. jPhosphodiester jbonds
c. jDNA jnucleotides
d. jRNA jpolymerase
d. jmessenger jRNA j(mRNA) j- jANS✓✓-A jresearch jscientist jis jtrying jto jcreate ja
jnew jstrain jof jbacteria jthat jcan jproduce ja jprotein jneeded jfor jher jresearch.
jWhich jof jthe jfollowing jmolecules jwill jact jas ja jtemplate jin jcreating jthe jprotein?
Select jone:
a. jRibosomal jRNA(rRNA) j
b. jRibozyme
c. jtransfer jRNA j(tRNA)
d. jmessenger jRNA j(mRNA)
C.Production jof jproteins jwould jstop. j- jANS✓✓-What jis jone jdirect jeffect jof
jinhibiting jtranslation?
Select jone:
a. jDNA jwould jno jlonger jbe jreplicated. j
b. jThe jlevel jof jproteins jwould jremain jthe jsame.
c. jProduction jof jproteins jwould jstop.
d. jTranscription jwould jcease.
How jmany jamino jacids, jand jwhich jones, jwould jbe jencoded jby jthe jfollowing
jmRNA jsequence: j5'-AUGACUCCCGGG-3'? j(The jcodon jtable jbelow jcan jassist
jyou.)
a. jThree jamino jacids j- jMet, jIle, jand jArg
b. jFour jamino jacids j- jMet, jLeu, jPro, jVal
c. jFour jamino jacids j- jMet, jThr, jPro jand jGly j
d. jThree jamino jacids j- jMet, jThr, jand jProc. j- jANS✓✓-c. jFour jamino jacids j- jMet,
jThr, jPro jand jGly jAmino jacids jare jcoded jby j3-letter jcodons, jand jthe jsequence
jcontains j12 jnucleotides, jwhich jmeans jis jcodes jfor jfour jamino jacids. jThe jfirst
jis jAUG jfor jMet, jthe jsecond jis jACU jfor jThr, jthe jthird jis jCCC jfor jPro, jand jthe
jfourth jis jGGG jfor jGly.
d. jPromoters jPromoters jare jDNA jsequences jnear jthe jstart jof ja jgene jthat jare
jrecognized jby jtranscription jfactors jwhich jrecruit jRNA jpolymerase jto jthat jgene
jfor jexpression. jThis jis jan jimportant jaspect jof jtranscription, jbut jis jnot jpart jof
jmRNA jprocessing. j5' jcap jaddition jis jan jimportant jmRNA jprocessing jstep jthat
joccurs jsoon jafter jtranscription jof jthe jmRNA jbegins, jand jpoly(A) jaddition jis ja
jprocessing jstep jthat joccurs jsoon jafter jtranscription jof jthe jmRNA jends. jThe
jfinal jstep jof jmRNA jprocessing jis jsplicing j- jremoving jintrons jand jconnecting
jthe jexons jof ja jgene j- jprior jto jthe jexit jof jmRNA jfrom jthe jnucleus jfor
jtranslation. j- jANS✓✓-Which jof jthe jfollowing jis jNOT jpart jof jmRNA jprocessing
jprior jto jtranslation?
Select jone:
a. j5' jcap jaddition
