BIO 110 EXAM 2 STUDY GUIDE
QUESTIONS AND ANSWERS RATED
A+ SURE PASS!!! 2026/2027
mWhatmismthemoverallmreactionmformphotosynthesis?m(bothmchemical,mandminmcommonmterms)m-
mCORRECTmANSWERSm6CO2m+m6H2Om+msunlightm-->mC6H12O6m+m6O2
sunlightmenergymandmcarbonmdioxidemandmwatermcombinemtomproducemsugarmandmoxygenm(themre
versemismcellularmrespiration)
WhatmhappensminmlightmreactionsmandmthemCalvinmCyclem(inputsmandmoutputs).m-
mCORRECTmANSWERSmTheminputsmformthemlightmreactionsmaremH2Omandmlightmandmthembyproductmi
smoxygenm(O2),mATP,mandmNADPH.mTheminputmformthemCalvinmCyclemaremCO2maremsugar.
Wheremismwatermsplit?m-mCORRECTmANSWERSmwatermismsplitmduringmPSII
Whatmhappensmtomthemcomponentsmofmwatermthroughmthemrestmofmthemprocess?m-
mCORRECTmANSWERSmH+marempumpedmtomthemthylakoidmlumenmandmelectronsmpassmtomPSI
WheremaremATPmandmNADPHmproducedm-
mCORRECTmANSWERSmInmthemLightmDependentmreactionsmofmPhotosynthesis:mthismisminmthemthylak
oidmmembrane.mMoremspecifically,mtheymaremcreatedmthroughmPhotosystemsmImandmII.mPSIImmakes
mATPmwhilemPSImmakesmNADPH.
Howmismsunlightmcapturedm/mwhatmdompigmentsmdo?m-
mCORRECTmANSWERSmSunlightmismcapturedmbympigmentsmthroughmabsorption.mTheymabsorbmdiffer
entmwavelengthsmofmlight.
, antennamcomplexm-
mCORRECTmANSWERSmharnessesmlightmenergyminmPSImandmdirectsmitmtomthemreactionmcenter
reactionmcenterm-
mCORRECTmANSWERSmorganizedmassociationmofmproteinsmholdingmamspecialmpairmofmchlorophylmm
oleculesmandmlightmenergymsplitsmwatermintomO2m&mH+
resonancemenergym-
mCORRECTmANSWERSmmechanismmbymwhichmantennamcomplexmchlorophyllsmtransfermenergymtow
ardmreactionmcenters
TrackmthemenergymandmelectronmthroughmPSIImandmPSIm(BemablemtomdrawmthemZ-scheme)m-
mCORRECTmANSWERSm
Wheremdoesmlightmenergymbecomemchemicalmenergy?m-
mCORRECTmANSWERSminnermthylakoidmspace
Understandmhowmcyclicmphotophosphorylationmworksmandmwhatmismitmusedmform-
mCORRECTmANSWERSmCyclicmPhosphorylationmismamroutemofmelectronmflowmduringmthemlightmreacti
onsmofmphotosynthesismthatminvolvesmonlymonemphotosystemmandmthatmproducesmATPmbutmnotmNA
DPHmormO2.mThismprocessmismutilizedmwhenmwhenmtheremismnomNADP+mavailablemtomactmasmthemfina
lmelectronmacceptor.mThismoccursmmostlyminmbacteria.
HowmismthemH+mgradientmcreatedmandmwhatmismitmusedmfor?m-
mCORRECTmANSWERSmThemH+mgradientmismcreatedmwhenmelectronsmaremtransportedmdownmamchai
nmandmitmismusesmprotonmmotivemforce*************
WhatmwouldmhappenmifmyoumchangemthempHmofmthemchloroplastm-
mCORRECTmANSWERSmIfmyoumchangemthempHmofmthemchloroplasts,mthemproteinsmpresentminmthemm
willmhavemthempropensitymtomdenaturemandmthereforembecomemvoid.
QUESTIONS AND ANSWERS RATED
A+ SURE PASS!!! 2026/2027
mWhatmismthemoverallmreactionmformphotosynthesis?m(bothmchemical,mandminmcommonmterms)m-
mCORRECTmANSWERSm6CO2m+m6H2Om+msunlightm-->mC6H12O6m+m6O2
sunlightmenergymandmcarbonmdioxidemandmwatermcombinemtomproducemsugarmandmoxygenm(themre
versemismcellularmrespiration)
WhatmhappensminmlightmreactionsmandmthemCalvinmCyclem(inputsmandmoutputs).m-
mCORRECTmANSWERSmTheminputsmformthemlightmreactionsmaremH2Omandmlightmandmthembyproductmi
smoxygenm(O2),mATP,mandmNADPH.mTheminputmformthemCalvinmCyclemaremCO2maremsugar.
Wheremismwatermsplit?m-mCORRECTmANSWERSmwatermismsplitmduringmPSII
Whatmhappensmtomthemcomponentsmofmwatermthroughmthemrestmofmthemprocess?m-
mCORRECTmANSWERSmH+marempumpedmtomthemthylakoidmlumenmandmelectronsmpassmtomPSI
WheremaremATPmandmNADPHmproducedm-
mCORRECTmANSWERSmInmthemLightmDependentmreactionsmofmPhotosynthesis:mthismisminmthemthylak
oidmmembrane.mMoremspecifically,mtheymaremcreatedmthroughmPhotosystemsmImandmII.mPSIImmakes
mATPmwhilemPSImmakesmNADPH.
Howmismsunlightmcapturedm/mwhatmdompigmentsmdo?m-
mCORRECTmANSWERSmSunlightmismcapturedmbympigmentsmthroughmabsorption.mTheymabsorbmdiffer
entmwavelengthsmofmlight.
, antennamcomplexm-
mCORRECTmANSWERSmharnessesmlightmenergyminmPSImandmdirectsmitmtomthemreactionmcenter
reactionmcenterm-
mCORRECTmANSWERSmorganizedmassociationmofmproteinsmholdingmamspecialmpairmofmchlorophylmm
oleculesmandmlightmenergymsplitsmwatermintomO2m&mH+
resonancemenergym-
mCORRECTmANSWERSmmechanismmbymwhichmantennamcomplexmchlorophyllsmtransfermenergymtow
ardmreactionmcenters
TrackmthemenergymandmelectronmthroughmPSIImandmPSIm(BemablemtomdrawmthemZ-scheme)m-
mCORRECTmANSWERSm
Wheremdoesmlightmenergymbecomemchemicalmenergy?m-
mCORRECTmANSWERSminnermthylakoidmspace
Understandmhowmcyclicmphotophosphorylationmworksmandmwhatmismitmusedmform-
mCORRECTmANSWERSmCyclicmPhosphorylationmismamroutemofmelectronmflowmduringmthemlightmreacti
onsmofmphotosynthesismthatminvolvesmonlymonemphotosystemmandmthatmproducesmATPmbutmnotmNA
DPHmormO2.mThismprocessmismutilizedmwhenmwhenmtheremismnomNADP+mavailablemtomactmasmthemfina
lmelectronmacceptor.mThismoccursmmostlyminmbacteria.
HowmismthemH+mgradientmcreatedmandmwhatmismitmusedmfor?m-
mCORRECTmANSWERSmThemH+mgradientmismcreatedmwhenmelectronsmaremtransportedmdownmamchai
nmandmitmismusesmprotonmmotivemforce*************
WhatmwouldmhappenmifmyoumchangemthempHmofmthemchloroplastm-
mCORRECTmANSWERSmIfmyoumchangemthempHmofmthemchloroplasts,mthemproteinsmpresentminmthemm
willmhavemthempropensitymtomdenaturemandmthereforembecomemvoid.