BIOCHEM MODULE 6 EXAM 2025-2026
QUESTIONS WITH VERIFIED
ANSWERS
thymineW-WCORRECTWANSWERSInWDNA,WadenineWalwaysWpairsWwith
guanineW-WCORRECTWANSWERSInWRNA,WcytosineWalwaysWpairsWwith
uracilW-WCORRECTWANSWERSInWRNA,WadenineWalwaysWpairsWwith
nucleotidesW-WCORRECTWANSWERSDNAWisWbuiltWfromWwhichWofWtheWfollowing?
nucleosides
genes
purines
nucleotides
codons
hydrogenWbondsW-
W CORRECTW ANSWERSTheW doubleW helixW ofWDNAW isW stabilizedW mainlyW by
2-deoxyriboseW-WCORRECTWANSWERSWhatWpentoseWsugarWisWaWconstituentWofWDNA?
riboseW-WCORRECTWANSWERSWhatWpentoseWsugarWisWaWconstituentWofWRNA?
1Wring,W2WnitrogensW-
W CORRECTW ANSWERSPyrimidinesW haveW ________W ring(s),W containingW ______W nitroge
n(s).
2Wrings,W2WnitrogensW-
W CORRECTW ANSWERSPurinesW haveW ________W ring(s),W (each)W containingW ______W nitr
ogen(s).
ribonucleicWacidW(RNA)W-
W CORRECTW ANSWERSWhatW nucleicW acidW isW responsibleW forW usingW theW encodedW geneti
cWinformationWtoWproduceWofWproteinsWfoundWinWlivingWorganisms?
A-T/U
C-GW-WCORRECTWANSWERSWhatWareWtheWcomplementaryWbases?
3WhydrogenWbondsWareWmadeWbetweenWGWandWCW-
W CORRECTW ANSWERSHowW manyW hydrogenW bondsW areW madeW betweenW guanineW andW i
tsWcomplementaryWnucleotide?
2WhydrogenWbondsWareWmadeWbetweenWadenineWandWthymine/uracilW-
W CORRECTW ANSWERSHowW manyW hydrogenW bondsW areW madeW betweenW adenineW andW i
tsWcomplementaryWnucleotide?
3'-CGTACTCGG-5'W-
W CORRECTW ANSWERSWhatW isW theW complementaryW strandW ofW DNAW forW theW baseW sequ
enceWofWDNAW5'-GCATGAGCC-3'?
3'-CGUAGUCGG-5'W-
W CORRECTW ANSWERSWhatW isW theW complementaryW strandW ofW RNAW forW theW baseW sequ
enceWofWRNAW5'-GCATGAGCC-3'?
mRNAW-
W CORRECTW ANSWERSWhichW typeW ofW RNAW functionsW toW carryW geneticW informationW fro
mWtheWDNAWtoWribosome?
QUESTIONS WITH VERIFIED
ANSWERS
thymineW-WCORRECTWANSWERSInWDNA,WadenineWalwaysWpairsWwith
guanineW-WCORRECTWANSWERSInWRNA,WcytosineWalwaysWpairsWwith
uracilW-WCORRECTWANSWERSInWRNA,WadenineWalwaysWpairsWwith
nucleotidesW-WCORRECTWANSWERSDNAWisWbuiltWfromWwhichWofWtheWfollowing?
nucleosides
genes
purines
nucleotides
codons
hydrogenWbondsW-
W CORRECTW ANSWERSTheW doubleW helixW ofWDNAW isW stabilizedW mainlyW by
2-deoxyriboseW-WCORRECTWANSWERSWhatWpentoseWsugarWisWaWconstituentWofWDNA?
riboseW-WCORRECTWANSWERSWhatWpentoseWsugarWisWaWconstituentWofWRNA?
1Wring,W2WnitrogensW-
W CORRECTW ANSWERSPyrimidinesW haveW ________W ring(s),W containingW ______W nitroge
n(s).
2Wrings,W2WnitrogensW-
W CORRECTW ANSWERSPurinesW haveW ________W ring(s),W (each)W containingW ______W nitr
ogen(s).
ribonucleicWacidW(RNA)W-
W CORRECTW ANSWERSWhatW nucleicW acidW isW responsibleW forW usingW theW encodedW geneti
cWinformationWtoWproduceWofWproteinsWfoundWinWlivingWorganisms?
A-T/U
C-GW-WCORRECTWANSWERSWhatWareWtheWcomplementaryWbases?
3WhydrogenWbondsWareWmadeWbetweenWGWandWCW-
W CORRECTW ANSWERSHowW manyW hydrogenW bondsW areW madeW betweenW guanineW andW i
tsWcomplementaryWnucleotide?
2WhydrogenWbondsWareWmadeWbetweenWadenineWandWthymine/uracilW-
W CORRECTW ANSWERSHowW manyW hydrogenW bondsW areW madeW betweenW adenineW andW i
tsWcomplementaryWnucleotide?
3'-CGTACTCGG-5'W-
W CORRECTW ANSWERSWhatW isW theW complementaryW strandW ofW DNAW forW theW baseW sequ
enceWofWDNAW5'-GCATGAGCC-3'?
3'-CGUAGUCGG-5'W-
W CORRECTW ANSWERSWhatW isW theW complementaryW strandW ofW RNAW forW theW baseW sequ
enceWofWRNAW5'-GCATGAGCC-3'?
mRNAW-
W CORRECTW ANSWERSWhichW typeW ofW RNAW functionsW toW carryW geneticW informationW fro
mWtheWDNAWtoWribosome?
