BIOCHEM MODULE 8 EXAM
QUESTIONS WITH CORRECT
ANSWERS 2025
truep4-p4ANSWERS--
T/F:p4Thep4majorityp4ofp4thep4reactionsp4ofp4thep4ureap4cyclep4occurp4inp4thep4cytosol.
falsep4-p4ANSWERS--
T/F:p4Thep4majorityp4ofp4thep4reactionsp4ofp4thep4ureap4cyclep4occurp4inp4thep4mitochondrial
p4matrix.
falsep4-p4ANSWERS--
T/F:p4FADH2p4yieldsp42.5p4ATPp4moleculesp4afterp4donatingp4electronsp4andp4hydrogenp4
atomsp4top4thep4ETC.
2.5p4ATPp4perp4NADHp4-p4ANSWERS--
Howp4manyp4ATPp4moleculesp4doesp4NADHp4yieldp4afterp4donatingp4electronsp4andp4hydr
ogenp4atomsp4top4thep4electronp4transferp4chainp4(ETC)?
1.5p4ATPp4perp4FADH2p4-p4ANSWERS--
Howp4manyp4ATPp4moleculesp4doesp4FADH2p4yieldp4afterp4donatingp4electronsp4andp4hy
drogenp4atomsp4top4thep4electronp4transferp4chainp4(ETC)?
truep4-p4ANSWERS--T/F:p4ATPp4isp4investedp4inp4thep4ureap4cycle.
3p4-p4ANSWERS--Howp4manyp4totalp4ATPp4arep4investedp4inp4thep4ureap4cycle?
falsep4-p4ANSWERS--T/F:p4Therep4arep45p4complexesp4associatedp4withp4thep4ETC.
4p4-p4ANSWERS--Howp4manyp4complexesp4arep4associatedp4withp4thep4ETC?
falsep4-p4ANSWERS--
T/F:p4Inp4thep4productionp4ofp4ATPp4viap4ATPp4synthase,p4thep4H+p4ionsp4movep4fromp4thep
4mitochondrialp4matrixp4top4thep4intermembranep4space.
truep4-p4ANSWERS--
T/F:p4Inp4thep4productionp4ofp4ATPp4viap4ATPp4synthase,p4thep4H+p4ionsp4movep4fromp4thep
4intermembranep4spacep4top4thep4mitochondrialp4matrix.
4p4-p4ANSWERS--
Thep4ureap4cyclep4involvesp4___p4reactionsp4(onlyp4thosep4inp4thep4cyclicp4portionp4ofp4thep
4process).
ornithine,p4arginine,p4andp4aspartatep4-p4ANSWERS--
Whatp4aminop4acidsp4arep4involvedp4inp4thep4ureap4cycle?
malatep4-p4ANSWERS--Fumaratep4reentersp4thep4mitochondrionp4as
, abilityp4top4hydrogenp4bondsp4withp4waterp4andp4itsp4highp4densityp4ofp4nitrogenp4inp4ap4sm
allp4moleculep4-p4ANSWERS--
Ureap4isp4usefulp4forp4excretingp4nitrogenp4fromp4cellsp4duep4top4its
fumaratep4-p4ANSWERS--
Whichp4componentp4ofp4thep4ureap4cyclep4isp4alsop4ap4memberp4ofp4thep4CAC?
NH4+p4(aminep4group)p4-p4ANSWERS--
Oxidativep4deaminationp4resultsp4inp4thep4removalp4ofp4___p4fromp4aminop4acids.
ureap4-p4ANSWERS--Whatp4isp4thep4followingp4chemicalp4species?
ammoniump4(NH4+)p4-p4ANSWERS--Whatp4isp4thep4followingp4chemicalp4species?
aspartatep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
argininep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
ornithinep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
complexp4Ip4-p4ANSWERS--NADHp4donatesp4electronsp4andp4H+p4top4complex
complexp4IIp4-p4ANSWERS--FADH2p4donatesp4electronsp4andp4H+p4top4complex
complexesp4I,p4III,p4IVp4-p4ANSWERS--Whichp4ofp4thep4ETCp4complexesp4pumpp4H+?
complexp4IIp4-p4ANSWERS--Whichp4ofp4thep4ETCp4complexesp4dop4notp4pumpp4H+?
cytochromep4cp4-p4ANSWERS--
Whatp4proteinp4shuttlesp4electronsp4fromp4complexp4IIIp4top4complexp4IV?
coQp4-p4ANSWERS--
Whatp4moleculep4transfersp4electronsp4andp4H+p4fromp4bothp4complexp4Ip4andp4complexp4I
Ip4top4complexp4III?
matrixp4-p4ANSWERS--
Inp4whatp4portionp4ofp4thep4mitochondrionp4doesp4thep4CACp4takep4place?
complexp4IVp4-p4ANSWERS--
Atp4whichp4complexp4doesp4thep4followingp4reactionp4takep4place?
O2p4+p44p4e-p4+p44p4H+p4→p42p4H2O
complexp4Ip4-p4ANSWERS--
Atp4whichp4complexp4doesp4thep4followingp4reactionp4takep4place?
NADHp4+p4H+p4+p4coQp4→p4NADp4+p4coQH2
QUESTIONS WITH CORRECT
ANSWERS 2025
truep4-p4ANSWERS--
T/F:p4Thep4majorityp4ofp4thep4reactionsp4ofp4thep4ureap4cyclep4occurp4inp4thep4cytosol.
falsep4-p4ANSWERS--
T/F:p4Thep4majorityp4ofp4thep4reactionsp4ofp4thep4ureap4cyclep4occurp4inp4thep4mitochondrial
p4matrix.
falsep4-p4ANSWERS--
T/F:p4FADH2p4yieldsp42.5p4ATPp4moleculesp4afterp4donatingp4electronsp4andp4hydrogenp4
atomsp4top4thep4ETC.
2.5p4ATPp4perp4NADHp4-p4ANSWERS--
Howp4manyp4ATPp4moleculesp4doesp4NADHp4yieldp4afterp4donatingp4electronsp4andp4hydr
ogenp4atomsp4top4thep4electronp4transferp4chainp4(ETC)?
1.5p4ATPp4perp4FADH2p4-p4ANSWERS--
Howp4manyp4ATPp4moleculesp4doesp4FADH2p4yieldp4afterp4donatingp4electronsp4andp4hy
drogenp4atomsp4top4thep4electronp4transferp4chainp4(ETC)?
truep4-p4ANSWERS--T/F:p4ATPp4isp4investedp4inp4thep4ureap4cycle.
3p4-p4ANSWERS--Howp4manyp4totalp4ATPp4arep4investedp4inp4thep4ureap4cycle?
falsep4-p4ANSWERS--T/F:p4Therep4arep45p4complexesp4associatedp4withp4thep4ETC.
4p4-p4ANSWERS--Howp4manyp4complexesp4arep4associatedp4withp4thep4ETC?
falsep4-p4ANSWERS--
T/F:p4Inp4thep4productionp4ofp4ATPp4viap4ATPp4synthase,p4thep4H+p4ionsp4movep4fromp4thep
4mitochondrialp4matrixp4top4thep4intermembranep4space.
truep4-p4ANSWERS--
T/F:p4Inp4thep4productionp4ofp4ATPp4viap4ATPp4synthase,p4thep4H+p4ionsp4movep4fromp4thep
4intermembranep4spacep4top4thep4mitochondrialp4matrix.
4p4-p4ANSWERS--
Thep4ureap4cyclep4involvesp4___p4reactionsp4(onlyp4thosep4inp4thep4cyclicp4portionp4ofp4thep
4process).
ornithine,p4arginine,p4andp4aspartatep4-p4ANSWERS--
Whatp4aminop4acidsp4arep4involvedp4inp4thep4ureap4cycle?
malatep4-p4ANSWERS--Fumaratep4reentersp4thep4mitochondrionp4as
, abilityp4top4hydrogenp4bondsp4withp4waterp4andp4itsp4highp4densityp4ofp4nitrogenp4inp4ap4sm
allp4moleculep4-p4ANSWERS--
Ureap4isp4usefulp4forp4excretingp4nitrogenp4fromp4cellsp4duep4top4its
fumaratep4-p4ANSWERS--
Whichp4componentp4ofp4thep4ureap4cyclep4isp4alsop4ap4memberp4ofp4thep4CAC?
NH4+p4(aminep4group)p4-p4ANSWERS--
Oxidativep4deaminationp4resultsp4inp4thep4removalp4ofp4___p4fromp4aminop4acids.
ureap4-p4ANSWERS--Whatp4isp4thep4followingp4chemicalp4species?
ammoniump4(NH4+)p4-p4ANSWERS--Whatp4isp4thep4followingp4chemicalp4species?
aspartatep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
argininep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
ornithinep4-p4ANSWERS--Whatp4aminop4acidp4isp4thep4followingp4structure?
complexp4Ip4-p4ANSWERS--NADHp4donatesp4electronsp4andp4H+p4top4complex
complexp4IIp4-p4ANSWERS--FADH2p4donatesp4electronsp4andp4H+p4top4complex
complexesp4I,p4III,p4IVp4-p4ANSWERS--Whichp4ofp4thep4ETCp4complexesp4pumpp4H+?
complexp4IIp4-p4ANSWERS--Whichp4ofp4thep4ETCp4complexesp4dop4notp4pumpp4H+?
cytochromep4cp4-p4ANSWERS--
Whatp4proteinp4shuttlesp4electronsp4fromp4complexp4IIIp4top4complexp4IV?
coQp4-p4ANSWERS--
Whatp4moleculep4transfersp4electronsp4andp4H+p4fromp4bothp4complexp4Ip4andp4complexp4I
Ip4top4complexp4III?
matrixp4-p4ANSWERS--
Inp4whatp4portionp4ofp4thep4mitochondrionp4doesp4thep4CACp4takep4place?
complexp4IVp4-p4ANSWERS--
Atp4whichp4complexp4doesp4thep4followingp4reactionp4takep4place?
O2p4+p44p4e-p4+p44p4H+p4→p42p4H2O
complexp4Ip4-p4ANSWERS--
Atp4whichp4complexp4doesp4thep4followingp4reactionp4takep4place?
NADHp4+p4H+p4+p4coQp4→p4NADp4+p4coQH2
