UA BSC 108 Exam 2 Questions with 100%
Correct Answers | Verified | Latest Update
Whatiisiaiphotosyntheticiautotroph?i-iCorrectiAnswer-
Aniorganismithatimakesiitsiownifoodifromiinorganiciingredients.
Whatiisitheifluidiinsideichloroplastsicalled?i-iCorrectiAnswer-Stroma
Whatiareitheimembranesiinsideichloroplastsicalled?i-iCorrectiAnswer-
inneriandiouterimembranes
Writeitheioveralliequationiforiphotosynthesis.i-iCorrectiAnswer-
6CO2+6H2O→C6H12O6+6O2
Whatiisitheiprimaryifunctioniofipigmentsiiniphotosynthesis?iNameitheip
rimaryipigmentiusediiniphotosynthesis.i-iCorrectiAnswer-
Pigmentsiabsorbicertainiwavelengths.iTheyiareitheimeansibyiwhichithei
energyiofisunlightiisicapturediforiphotosynthesis.iTheiprimaryipigmentiu
sediiniphotosynthesisiisiChlorophylla-a.
Whyiareileavesigreen?i-iCorrectiAnswer-
Theirigreenicoloriisifromichlorophyll,iaipigmenti(light-
iabsorbingimolecule)iinitheichloroplastsithatiplaysiaicentraliroleiiniconve
rtingisolarienergyitoichemicalienergy.
, Howiandiwhereidoesiwaterienteriaiplant?i-iCorrectiAnswer-
Waterientersirootihairicellsibyiosmosis.
Howiandiwhereidoesicarbonidioxideienteriaiplant?i-iCorrectiAnswer-
CarboniDioxideidiffusesithroughismalliholesiinitheiundersideiofileaves,ic
alleditheistomata.
Theilightireactionsitakeiplaceiinithreeistages.iNameitheistagesiandisumm
arizeitheieventsiofieachistage.i1.iPhotonsiexciteielectronsiinitheichlorop
hylliofitheifirstiphotosystem.iTheseiphotonsiareithenitrappedibyitheipri
maryielectroniacceptor.iThisiphotosystemithenireplacesitheilostielectro
nsibyiextractinginewionesifromiwater.iThisiisitheistepithatireleasesiO2idu
ringiphotosynthesis.i2.iEnergizedielectronsifromitheifirstiphotosystemip
assidownianielectronitransportichainitoitheisecondiphotosystem.iTheich
loroplastiusesitheienergyireleasedibyithisielectroni"fall"itoimakeiATP.i3.i
Theisecondiphotosystemitransfersiitsilight-
excitedielectronsitoiNADP+,ireducingiititoiNADPH.
Listialliproductsiofitheilightireactions.icarbonidioxide,iwater.iGlucose,iox
ygen
TheiCalvinicycleihasithreeimainistages.iNameitheistagesiandisummarizeit
heieventsiofieachistage.i-iCorrectiAnswer-"1)iCarboniFixation-
iTheienzymeirubiscoicombinesiCO2iwithi5-
carbonisugarirubuloseibiphosphatei(RuBP).iTheiunstableiproductiforme
displitsiintoi2imoleculesiofi3-carboni3-phosphoglycericiacidi(3-PGA).
2)iReduction-
iEnergyifromi6imoleculesiofiATPiisiuseditoioxidizeiNADPHitoiNADP+.iSixi
Correct Answers | Verified | Latest Update
Whatiisiaiphotosyntheticiautotroph?i-iCorrectiAnswer-
Aniorganismithatimakesiitsiownifoodifromiinorganiciingredients.
Whatiisitheifluidiinsideichloroplastsicalled?i-iCorrectiAnswer-Stroma
Whatiareitheimembranesiinsideichloroplastsicalled?i-iCorrectiAnswer-
inneriandiouterimembranes
Writeitheioveralliequationiforiphotosynthesis.i-iCorrectiAnswer-
6CO2+6H2O→C6H12O6+6O2
Whatiisitheiprimaryifunctioniofipigmentsiiniphotosynthesis?iNameitheip
rimaryipigmentiusediiniphotosynthesis.i-iCorrectiAnswer-
Pigmentsiabsorbicertainiwavelengths.iTheyiareitheimeansibyiwhichithei
energyiofisunlightiisicapturediforiphotosynthesis.iTheiprimaryipigmentiu
sediiniphotosynthesisiisiChlorophylla-a.
Whyiareileavesigreen?i-iCorrectiAnswer-
Theirigreenicoloriisifromichlorophyll,iaipigmenti(light-
iabsorbingimolecule)iinitheichloroplastsithatiplaysiaicentraliroleiiniconve
rtingisolarienergyitoichemicalienergy.
, Howiandiwhereidoesiwaterienteriaiplant?i-iCorrectiAnswer-
Waterientersirootihairicellsibyiosmosis.
Howiandiwhereidoesicarbonidioxideienteriaiplant?i-iCorrectiAnswer-
CarboniDioxideidiffusesithroughismalliholesiinitheiundersideiofileaves,ic
alleditheistomata.
Theilightireactionsitakeiplaceiinithreeistages.iNameitheistagesiandisumm
arizeitheieventsiofieachistage.i1.iPhotonsiexciteielectronsiinitheichlorop
hylliofitheifirstiphotosystem.iTheseiphotonsiareithenitrappedibyitheipri
maryielectroniacceptor.iThisiphotosystemithenireplacesitheilostielectro
nsibyiextractinginewionesifromiwater.iThisiisitheistepithatireleasesiO2idu
ringiphotosynthesis.i2.iEnergizedielectronsifromitheifirstiphotosystemip
assidownianielectronitransportichainitoitheisecondiphotosystem.iTheich
loroplastiusesitheienergyireleasedibyithisielectroni"fall"itoimakeiATP.i3.i
Theisecondiphotosystemitransfersiitsilight-
excitedielectronsitoiNADP+,ireducingiititoiNADPH.
Listialliproductsiofitheilightireactions.icarbonidioxide,iwater.iGlucose,iox
ygen
TheiCalvinicycleihasithreeimainistages.iNameitheistagesiandisummarizeit
heieventsiofieachistage.i-iCorrectiAnswer-"1)iCarboniFixation-
iTheienzymeirubiscoicombinesiCO2iwithi5-
carbonisugarirubuloseibiphosphatei(RuBP).iTheiunstableiproductiforme
displitsiintoi2imoleculesiofi3-carboni3-phosphoglycericiacidi(3-PGA).
2)iReduction-
iEnergyifromi6imoleculesiofiATPiisiuseditoioxidizeiNADPHitoiNADP+.iSixi
