Assignment 4 - Photosynthesis PDF

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3/12/2017

Assignment4Photosynthesis

Assignment4Photosynthesis Due:11:59pmonTuesday,March7,2017 Youwillreceivenocreditforitemsyoucompleteaftertheassignmentisdue.GradingPolicy

BioFlixQuiz:Photosynthesis Watchtheanimationbeforeansweringthequestions.

PartA Whichofthefollowingequationsrepresentsphotosynthesis?

Hint1. Rememberthepeoplefromthebeginningoftheanimationandwhattheyweredoing..Whywouldtheydothis?

ANSWER:

6CO2+6O2→C6H12O6+6H2O 6CO2+6H2O→C6H12O6+6O2 C6H12O6+6CO2→6O2+6H2O 6H2O+6O2→C6H12O6+6CO2 C6H12O6+6O2→6CO2+6H2O

Correct Photosynthesisrequirescarbondioxideandwaterfortheproductionofsugarandoxygen.

PartB Inwhichofthefollowingorganellesdoesphotosynthesistakeplace? https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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Hint1. Recallwhichorganellewasthefocusoftheanimation.

ANSWER:

Nucleus Mitochondrion Centralvacuole Ribosome Chloroplast

Correct Chloroplastsuseenergyfromlighttotransformcarbondioxideandwaterintosugarandoxygen.

PartC Whatconnectsthetwophotosystemsinthelightreactions?

Hint1. Thinkaboutwhatwasbeingshuttledfromonephotosystemtotheotherintheanimation.

ANSWER:

Anelectrontransportchain TheCalvincycle Athylakoid Chlorophyll Achainofglucosemolecules

Correct Anelectrontransportchainconnectsthetwophotosystemsinthelightreactions.

PartD WhattwomoleculesareproducedbythelightreactionsandusedtopowertheCalvincycle?

Hint1. https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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Recallfromtheanimationthemoleculesthatareproducedbythelightreactions.

ANSWER:

G3PandH2O C6H12O6andRuBP C6H12O6andO2 ATPandNADPH CO2andO2

Correct ATPandNADPHarebothproductsofthelightreactionsandareusedtopowertheCalvincycle.

PartE Whatprovideselectronsforthelightreactions?

Hint1. Recallfromtheanimationthestrippingofelectronsinthelightreactions.

ANSWER:

Light O2 CO2 TheCalvincycle H2O

Correct Electronsarestrippedfromwaterinthelightreactionsofphotosynthesis.Thisisoneofthereasonsplantsneed water.

PartF WhatprovidesthecarbonatomsthatareincorporatedintosugarmoleculesintheCalvincycle?

Hint1. Intheanimation,recallwhatcombineswithRuBPintheCalvincycle. https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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ANSWER:

Sucrose(C12H22O11) Carbondioxide(CO2) Glucose(C6H12O6) RuBP G3P(C3H6O3)

Correct Carbondioxideprovidesthecarbonatomsthatareincorporatedintosugarsinphotosynthesis.Thisiswhyplants needtotakeincarbondioxide.

PartG WhattransportselectronsfromthelightreactionstotheCalvincycle?

Hint1. RecallfromtheanimationwhatpickedupelectronsinthelightreactionsandreleasedelectronsintheCalvincycle.

ANSWER:

Anelectrontransportchain FADH2 NADH Chlorophyll NADPH

Correct NADPHisanelectroncarrierthatpicksupelectronsinthelightreactionsandreleasesthemintheCalvincycle.

PartH Thelightreactionstakeplaceinthe_________andtheCalvincycletakesplaceinthe_________. ANSWER:

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thylakoids;stroma stroma;thylakoids innermembrane;outermembrane mitochondria;chloroplasts chloroplasts;mitochondria

Correct Withinthechloroplast,thelightreactionstakeplaceintheflattenedsacscalledthylakoidsandtheCalvincycletakes placeinthethickfluidcalledthestroma.

Chapter7KeyConceptQuizQuestion1 PartA Whichofthefollowingarephotoautotrophs?

Hint1. Considerthemeaningofthewordphotoautotroph:Photo=sun,auto=self,troph=nourishment.

ANSWER:

cornstalksjustbeforeharvest bacteriafoundinthehumandigestivetract filamentousmoldsgrowingonbread deepseaventorganismsthatmakeorganicmoleculesusinghydrogensulfideasanenergysource

Correct Cornplantsarephotoautotrophs.Theyproduceorganicmoleculesfrominorganicmoleculesusingtheenergyoflight.

Chapter7Question1MultipleChoice

PartA Whatisthenamegiventoorganismsthatcanmaketheirownfoodandthussustainthemselveswithoutconsuming organicmoleculesderivedfromotherorganisms? ANSWER: https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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chemotrophs heterotrophs synthesizers autotrophs

Correct

Chapter7Question5MultipleChoice

PartA Whatisthelikelyoriginofchloroplasts? ANSWER:

eukaryotesthatengulfedphotosyntheticfungi prokaryoteswithphotosyntheticmitochondria mitochondriathathadamutationforphotosynthesis photosyntheticprokaryotesthatlivedinsideeukaryoticcells

Correct

Chapter7KeyConceptQuizQuestion2 PartA Chlorophyllisfoundinthe_____ofchloroplasts.

Hint1. Considerwherethispigmentisthemostconcentrated.

ANSWER:

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stroma outermembrane thylakoidmembranes thylakoidspace

Correct Thisiswherelightabsorptionoccursduringphotosynthesisandthereforeistheplacewherechlorophyllmoleculesare located.

Chapter7Question6MultipleChoice

PartA Inmostgreenplants,chloroplastsare ANSWER:

evenlydistributedthroughouttheentireplant. concentratedinaportionoftheleafcalledthestroma. evenlydistributedthroughouttheleaftissue. concentratedinazoneofleaftissuecalledthemesophyll.

Correct

Chapter7Question8MultipleChoice

PartA CO2entersandO2escapesfromaleafvia ANSWER:

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stomata. grana. thylakoids. stroma.

Correct

Chapter7Question9MultipleChoice

PartA Inthechloroplast,sugarsaremadeinacompartmentthatisfilledwithathickfluidcalledthe ANSWER:

thylakoid. matrix. stroma. stomata.

Correct

Chapter7Question10MultipleChoice

PartA Chloroplastscontaindisklikemembranoussacsarrangedinstackscalled ANSWER: grana. vacuoles. cristae. thylakoids.

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Correct

Chapter7Question17MultipleChoice

PartA Whatisthesourceofenergythatprovidestheboostforelectronsduringphotosynthesis? ANSWER:

electromagnetism light cellularrespiration ATP

Correct

Chapter7KeyConceptQuizQuestion5 PartA Thelightreactionsofphotosynthesisinclude_____.

Hint1. ConsiderwhatoccursinthelightreactionsandwhatoccursintheCalvincycle.

ANSWER:

thestoma reductionofCO2 reductionofNADP+ theCalvincycle NADPHrecycling

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Correct NADP+isreducedduringthelightreactions,andtheseelectronsarelaterusedtoreduceCO2toglucoseintheCalvin cycle.

Chapter7KeyConceptQuizQuestion6 PartA TheconversionofNADP+toNADPHoccurswiththeassistanceof_____.

Hint1. Considerthesourceofelectronsforthisreactionandhowthereactionisdriven.

ANSWER:

electronsfromwaterandenergyfromATP electronsfromcarbondioxideandenergyfromsunlight electronsfromwaterandenergyfromsunlight electronsfromcarbondioxideandenergyfromATP

Correct Waterisnecessarybecauseitisthesplittingofwatermoleculesthatprovidesplantcellswithelectronsandaproton toreduceNADP +toNADPH.LightenergyisrequiredtodrivethetransferoftheelectronstoNADP+.

Chapter7Question19MultipleChoice

PartA Thelightreactionsoccurinthe________,whiletheCalvincycleoccursinthe________. ANSWER:

stroma...nucleus cytoplasm...thylakoidmembrane thylakoidmembranes...stroma stroma...thylakoidmembranes

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Correct

Chapter7Question20MultipleChoice

PartA Whichofthefollowingareproducedduringthelightreactionsofphotosynthesis? ANSWER:

ADP,NADP+,O2 glucose,ADP,NADP+,CO2 glucose,ADP,NADP+ ATP,NADPH,O2

Correct

Chapter7Question22MultipleChoice

PartA WhichofthefollowingareproducedduringtheCalvincycle? ANSWER:

glucose,ADP,NADP+,CO2 ATP,NADPH,CO2 glucose,ADP,NADP+ ATP,NADPH,O2

Correct

Chapter7KeyConceptQuizQuestion7

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PartA Whichofthefollowingcolorsoflightareusefulduringtheprocessofphotosynthesis?

Hint1. Rememberthatwavelengthscanbetransmitted,reflected,orabsorbed.

ANSWER:

blue,red,andviolet blue,green,andorange orange,red,andviolet green,orange,andred

Correct Wedonotseetheabsorbedwavelengths,onlythosethatarereflected.Plantsappeargreenastheyabsorbthese colorsandreflectmostlygreenlight.

Chapter7Question24MultipleChoice

PartA Sunlightisatypeof________energy. Checkallthatapply. ANSWER:

electromagnetic potential nuclear kinetic

Correct

Chapter7Question27MultipleChoice

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PartA Whichofthefollowingcolorscontributestheleast energytophotosynthesis? ANSWER:

blue orange red green

Correct

Chapter7Question31MultipleChoice

PartA Apacketoflightenergyiscalleda ANSWER:

photon. pigment. quantum. phaser.

Correct

Chapter7KeyConceptQuizQuestion8 PartA TheprimaryfunctionoflightabsorptionbyphotosystemsIandIIistoproduce_____.

Hint1. RecallthattheproductsofthelightreactionsareneededtodrivetheCalvincycle.

ANSWER:

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heat afree,energizedelectron fluorescence oxygen

Correct Thisfree,energizedelectronpowerstheelectrontransportchaintogenerateATPandultimatelybe"handedoff"to NADP+tomakeNADPHfortheCalvincycle.

Chapter7Question35MultipleChoice

PartA HowdothereactioncentersofphotosystemIandIIdiffer? ANSWER: PhotosystemIfunctionsfirstinthesequenceofstepsthatmakeupthelightreactions. PhotosystemIIdoesnottransferelectronsfromphotons. Eachpreferentiallyabsorbsslightlydifferentwavelengthsoflight. Chlorophyll aisfoundinphotosystemIandchlorophyll binphotosystemII.

Correct

Chapter7Question36MultipleChoice

PartA Clustersoflightgatheringpigmentsinaphotosystem ANSWER:

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arefoundintherootsofplants. breakdownH2O. absorbelectrons. passenergytothereactioncenter.

Correct

Chapter7Question42MultipleChoice

PartA TheelectronslostfromthereactioncenterofphotosystemIIarereplacedbyelectronsfrom ANSWER: CO2. photosystemI. ATP. H2O.

Correct

Chapter7Question46MultipleChoice

PartA ThechloroplastATPsynthase ANSWER:

couplestheflowofH+tothephosphorylationofADP. isanucleicacidcomplex. isfoundinthestroma. helpstransportH+againsttheconcentrationgradient.

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Correct

Chapter7KeyConceptQuizQuestion11 PartA Insimplesummaryform,theinputoftheCalvincycleforeveryproductis_____,andtheoutputis_____usedforglucos synthesis.

Hint1. Inthissense,"input"and"output"refertomoleculesratherthanenergy.

ANSWER:

6CO2...glucose NADP+...NADPH ADP...ATP 3CO2...athreecarbonmolecule

Correct ForeverysixmoleculesofG3Pproduced,3CO2enterthecycle.(OneG3Pleavesthecycleasanoutput.Theother fiveremainandarerearrangedtoformRuBP.)Inaddition,glyceraldehyde3phosphate(G3P),athreecarbon molecule,isshuntedoffthecycleforglucosesynthesis.

Chapter7KeyConceptQuizQuestion12 PartA HowmanyturnsoftheCalvincyclearerequiredtoproduceonemoleculeofglucose?

Hint1. Considertheinputandoutputofeachcycle.

ANSWER:

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Assignment4Photosynthesis

three six one two

Correct TwoturnsoftheCalvincyclecanleadtotheproductionofonemoleculeofglucoseasthethreecarbonprecursor, glyceraldehyde3phosphate,isproducedwitheachturnofthecycle.

Chapter7Question49MultipleChoice

PartA Photosyntheticorganismsderivetheircarbonfrom ANSWER:

hydrocarbons. carbonmonoxide. methane. carbondioxide.

Correct

Chapter7Question52MultipleChoice

PartA TheCalvincycleconstructs________,anenergyrichmoleculethataplantcellcanthenusetomakeglucoseorother organicmolecules. ANSWER:

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Assignment4Photosynthesis

ATP carbondioxide NADH G3P

Correct

Chapter7Question2Scenario

PartA Afterreadingtheparagraph,answerthequestion(s)thatfollow. You'reconductinganexperimenttodeterminetheeffectofdifferentwavelengthsoflightontheabsorptionofcarbon dioxideasanindicatoroftherateofphotosynthesisinaquaticecosystems.Iftherateofphotosynthesisincreases,the amountofcarbondioxideintheenvironmentwilldecreaseandviceversa.You'veaddedanindicatortoeachsolution. Whenthecarbondioxideconcentrationdecreases,thecoloroftheindicatorsolutionalsochanges. Smallaquaticplantsareplacedintothreecontainersofwatermixedwithcarbondioxideandindicatorsolution.ContainerA isplacedundernormalsunlight,Bundergreenlight,andCunderredlight.Thecontainersareobservedfora24hour period.

Carbondioxideabsorptionisanappropriateindicatorofphotosynthesisbecause ANSWER:

plantsproduceoxygengasbysplittingCO2. CO2isneededtocompletethelightreactions. CO2isneededtoproducesugarsintheCalvincycle. theenergyinCO2isusedtoproduceATPandNADPH.

Correct

Chapter7Question57MultipleChoice

PartA Plantsusesugarsas https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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Assignment4Photosynthesis

ANSWER: asourceofelectronsforchemiosmosis. afuelforcellularrespirationandastartingmaterialformakingotherorganicmolecules. afuelforphotosynthesis. astartingmaterialfortheCalvincycle.

Correct

Chapter7PostLectureQuizQuestion5

PartA Youcoulddistinguishagranumfromaninnermitochondrialmembranebecausethegranum,butnottheinnermitochondria membrane,would_____.

Hint1. Considerthefunctionsofchloroplastsandmitochondria.

ANSWER:

havephotosyntheticpigments containproteinbutnotlipids functioninenergytransformation beinsideamitochondrion

Correct Thephotosyntheticpigmentchlorophyllisanchoredinthethylakoidmembrane.

Chapter7PostLectureQuizQuestion9

PartA Cellularrespirationandphotosynthesisaresimilarinthatbothinvolve_____.

Hint1. Considertheeventsthatoccuronthemembranesofbothorganelles. https://session.masteringbiology.com/myct/assignmentPrintView?displayMode=studentView&assignmentID=5560865

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Assignment4Photosynthesis

ANSWER:

thereleaseofO2intotheatmosphere theproductionofsugars watersplitting oxidationreduction(redox)reactions

Correct Bothcellularrespirationandphotosynthesisinvolveaseriesofoxidationreductionevents.

Chapter7PostLectureQuizQuestion15

PartA Whenchloroplastpigmentsabsorblight,_____.

Hint1. Thinkaboutwhathappenswithlightinphotosynthesis.

ANSWER:

theCalvincycleistriggered theirelectronsbecomeexcited theybecomereduced theylosepotentialenergy

Correct Theabsorbedenergymovestheelectronstoamoreenergeticorbital.

Chapter7PostLectureQuizQuestion23

PartA Lightreactionsarelocatedinthethylakoidmembranebecause_____.

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