life science fcat preparation - mrs....
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LifeScienceFCATPreparation
OrganizedbyGrade‐levelBenchmarks
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haugabrookjTypewritten TextFCAT PRACTICE BOOKLET
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Compiled by Johnetta Haugabrook – Staff Developer 1 | P P M S
GRADE8
SC.8.L.18.4CiteevidencethatlivingsystemsfollowtheLawsofConservationofMassandEnergy. SC.8.L.18.1Describeandinvestigatetheprocessofphotosynthesis,suchastherolesoflight,carbondioxide,waterandchlorophyll;productionoffood;releaseofoxygen.SC.8.L.18.2Describeandinvestigatehowcellularrespirationbreaksdownfoodtoprovideenergyandreleasescarbondioxide.SC.8.L.18.3Constructascientificmodelofthecarboncycletoshowhowmatterandenergyarecontinuouslytransferredwithinandbetweenorganismsandtheirphysicalenvironment.MultipleChoiceIdentifythechoicethatbestcompletesthestatementoranswersthequestion.
1. Wormsbreakdowndeadplantsinthesoiltoreleasenutrients.Whichpropertyofnutrientsshowsthattheyare
matter?
A. Nutrientsarewarm.B. Nutrientscandowork. C. Nutrientscontainenergy. D. Nutrientshavemass.
2. Biologistsmeasurethelengthofataggedseaturtle.Theylearnthattheturtleis2.3cmlongerthanthelasttimeitwasmeasured.Wheredidtheseaturtlegetthenutrientsitneededtogrow?
A. fromthejellyfishitateB. fromsunlightitabsorbedC. fromtheoxygenitbreathedD. fromnutrientsitabsorbedfromthewater
3. Analligatorlivesinaswampwithdeer,birds,fish,trees,andotherplants.Thealligatoreatsabirdthateatstheseedsandplants.Whatistheoriginalsourceoftheenergythatthealligatorgetsfromeatingthebird?
A. theflowingwaterintheswampB. theenergythatthebirdcreatesC. thesunlightthattheplantsabsorbD. theheatfromtheairintheswamp
4. OneofthelargestcypresstreesinFloridahasatreetrunkwithadiameterofabout3.5m.Whatisthesourceofmostofthecarboninthecypresstree’strunk?
A. Thecarboncreatedbythetreeduringphotosynthesis.B. Thecarbonstoredintreeseeds.C. Thecarbondioxidemoleculesthetreeabsorbedfromtheatmosphere.D. Thenutrientscontainingcarbonthatthetreeabsorbedfromthesoil.
5. Acoralreefisdamagedduringahurricane.Thewavesandcurrentsmovebrokenpiecesofcoralontothebeach.Whathappenedtothematterinthebrokenpiecesofcoral?
A. Itisstillpartofthecoralreefecosystem.B. Itwasremovedfromtheenvironment.C. Itbecamepartofthebeachecosystem.D. Itwaslostduetotheenergyinthewaves.
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Compiled by Johnetta Haugabrook – Staff Developer 6 | P P M S
20. Kristineexercisesregularly.TheprocessofcellularrespirationmakesitpossibleforKristinetorunonthetreadmillandtoliftweights.Whatdohercellsdoduringcellularrespiration?
A. convertkineticenergyintochemicalenergyB. absorblightenergythroughthechlorophyllintheirchloroplastsC. combinewaterandcarbondioxidetoproduceoxygenandglucoseD. breakdownfoodmoleculestoreleaseenergyintheformofATP
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L.15.2ExplorenvironmentL.15.1Recognerspecies.L.15.3ExploreronmentmayL.16.1UnderditaryinformageoftheseiL.16.2DetermL.16.3Compairingmitosis.L.17.2Compapetition,andL.17.1ExplainergytransferL.17.3Describdingfood,she
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Compiled by Johnetta Haugabrook – Staff Developer 9 | P P M S
5. CheetahsareaspeciesoflargewildcatsthatliveinAfrica.Theirpopulationshaveverylowlevelsofgeneticvariation.Howcouldthisaffectacheetahpopulation’sabilitytoevolveinresponsetochangesintheirenvironment,suchasdecreasednumbersofafavoriteprey?A. Whenpopulationshavelowgeneticdiversity,theywillalladaptquicklytoachanging
environment. B. Whenpopulationshavelowgeneticdiversity,theywillbeunabletogainvariationthrough
mutation.C. Whenpopulationshavelowgeneticdiversity,theyhavehighdiversityinphysicaltraits,and
someindividualswillprobablyfindanewkindofpreytoeat.D. Whenpopulationshavelowgeneticdiversity,itislesslikelythattheywillbeabletoadaptto
changedenvironmentandfindanewkindofpreytoeat.
6. Abbyanalyzeddatatodeterminewhetherlargerhabitatshaveahigherdiversityoforganisms.Shecollecteddataaboutbiodiversityofbirdsintemperateforestsbycountingthenumberofspeciesthatliveineachof5habitatsthatdifferedinsize.Thetablebelowshowsherdata.
HABITATSIZEANDNUMBEROFBIRDSPECIES NumberofBirdSpecies HabitatSize(km2)HabitatA 5 37HabitatB 17 248HabitatC 4 16HabitatD 12 123HabitatE 13 190
Basedonthedata,whatcanAbbyconcludeabouttherelationshipbetweenhabitatsizeanddiversityofbirds?A. Thereisnorelationshipbetweenhabitatsizeandnumberofbirdspecies.B. Ashabitatsizeincreases,thenumberofbirdspeciesinthehabitatdecreases.C. Ashabitatsizedecreases,thenumberofbirdspeciesinthehabitatdecreases.D. Ashabitatsizedecreases,thenumberofbirdspeciesinthehabitatincreases.
7. Lindaownsanorchardoforangetrees,andsheisworriedbecauseshenoticesthatmanyofherorangetreesareunhealthy.Theyappeartohaveverylittleresistancetoattackbyacertainfungusthatisdestroyingtheirleaves.Sheconsultswithsomebiologistfriends,andtheytellherthatherorchardisthreatenedbylowgeneticdiversity.Howcouldsheimprovetheabilityofherorchardtoresistdiseaseinthefuture?A. Shecouldsprayachemicalthatkillsthefungus,sotreeswillnothavetofightoffthefungus
attack.B. Shecouldintroduceanotherspeciesoffungustotheorchard,sothecurrentdamagingfungus
hastocompeteinordertosurvive.C. Shecouldpollinatehertreeswithpollenfromothertreesintheorchard,sonewtreeswill
havethesamesourcesofgeneticvariation.D. Shecouldpollinatehertreeswithpollenfromtreesfromadifferentorchard,sonewtrees
willhavenewsourcesofgeneticvariation.
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Compiled by Johnetta Haugabrook – Staff Developer 10 | P P M S
8. Fruitfliesreproducequickly,soscientistscaneasilystudychangesthatoccurovergenerationsoffruitfliesastheyadapttoanenvironment. Carloswasconductinganexperimenttoseehowquicklydifferentpopulationsoffruitfliescouldevolveresistancetocoldtemperatures.Hepredictedthatfruitfliesfromnorthernclimateswouldevolveresistancetoextremecoldmorequicklythanfruitfliesfromsouthernclimates.Toconducthisexperiment,hecompletedthesesteps:1)Heraisedfruitfliesfrom3differentnorthernclimatesinseparateenclosedartificialenvironments.Someenvironmentsweresetatextremelycoldtemperaturesandsomeweresetatnormaltemperatures.2)Hecalculatedthepercentagethatdiedineachartificialenvironment.3)Heletthesurvivorsmatewithintheirartificialenvironment. 4)Hethencalculatedthepercentageofeachpopulationthatdiedineachartificialenvironmentthenextgenerationandrepeatedsteps2through4manytimes.5)Heplottedthedataonagraphandcomparedhowthepercentageoffruitfliesdyingineachgenerationdifferedbetweenfruitfliesintheextremelycoldversusthenormaltemperatureenclosures.6)Hefoundthatthattherewasnodifferencebetweenthetwoconditions. 7)Heconcludedthatthereisnodifferenceinbetweennorthernandsouthernfruitflypopulations’abilitytoadapttocoldtemperatures.Carlosmadeamistakewhenhedesignedtheexperiment.Whatistheflaw,andhowcouldheimprovehisdesign?A. Carlosneedstocomparefruitfliesfromagreaternumberofnorthernclimates.Hecoulduse
fruitfliesfrom6insteadof3differentnorthernclimates.B. Carlosneedstofocusonfruitfliesfromonlyonelocation.Heneedstoconductthesame
experimentbutusefruitfliesfromonlyonenorthernclimate.C. Carlosneedstocomparefruitfliesfromnorthernandsouthernclimates.Hecouldconduct
thesameexperimentwithfruitfliesfromsouthernclimatesandcomparetheresults.D. Carlosneedstocomparefruitfliestootherorganisms,suchasgrasshoppers,inordertomake
hisconclusion.Hecouldconductthesameexperimentongrasshoppersandcomparetheresults.
9. WhenavolcanoeruptedonasmallislandinthePacificOcean,thelavaandashcoveredmuchofthesurroundingforest.Thebirdsthatlivedinthisforestwereabletoflytosaferpartsoftheforest,buttheystayedontheislandbecauseitwastoofartoflytootherislands.Asaresult,thenumberofappropriatenestsitesavailableforbirdsthatalreadylivedintheremainingforestwassuddenlyverylimited.Whichbirdsdoyouthinkwouldbemostlikelytosurviveafterthevolcanoerupts?A. Competitionfornestingsiteswouldbetoogreatforanyofthebirdstosurvive.B. Birdsthatestablishnestingsitesafterthetimeofyearwhenmostbirdsestablishtheir
nestingsiteswouldsurvive.C. Birdsthatestablishnestingsitesduringthetimeofyearwhenmostbirdsestablishtheir
nestingsiteswouldsurvive.D. Birdsthatestablishnestingsitesbeforethetimeofyearwhenmostbirdsestablishtheir
nestingsiteswouldsurvive.
10. Xavierwasconductingalong‐termstudyoftwopopulationsofbutterflies.Bothpopulationshadthesamenumberofindividuals.Bothpopulationslivedinforeststhatwerethesamesize.PopulationAlivedinaforestthatwasfullofmilkweed,thefavoritefoodofthisbutterflyspecies.PopulationBlivedinaforestthathadlimitedamountsofmilkweedandotherfoods.Overmanyyears,Xavierfoundthatoneofthepopulationswasshowingsignsofevolutionarychange.Theirmouthpartswerechanging,andtheycouldgetfoodfromnewkindsofplants.Whichstatementexplainswhyonepopulationwouldbemorelikelytoevolveinresponsetonaturalselection?A. PopulationBwouldbemorelikelytochangebecauseithasareadysupplyoffood,andonly
certainbutterflieswouldbeabletosurvive.B. PopulationAwouldbemorelikelytochangebecauseithasareadysupplyoffood,andwould
behealthyenoughtorespondtonaturalselection.C. PopulationAwouldbemorelikelytochangebecauseithasalimitedamountoffood,and
somebutterfliesmightbebetterabletogetenoughfood,survive,andreproduce.D. PopulationBwouldbemorelikelytochangebecausethosebutterflieshavealimitedsupply
offood,andsomebutterfliesmightbebetterabletogetenoughfood,survive,andreproduce.
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mallclownfiswimsaroundtpredators.Wharasitismmutualismommensalismredator‐prey
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yshrimplivesmpwithprotecrm.Whattermmutualismompetitionredator‐preyommensalism
netta Haugab
hlivesamongthetentacles,hatkindofsym
mrelationships
ofdrawingsbe
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14 | P P M S
tothepoisonprotection
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netta Haugab
estotheintesenoughnutriehostandthetahostandthetawormandthepisapredator,
s,robinspullwabiesintheneground’ssurfaenoeffectonulationwouldulationwouldulationwould
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rook – Staff D
stinesofapig.entsfromthefapewormisthapewormisthpigarecalled,thepigispre
wormsfromthest.Duringasaceincreases.robins.becomeextinincreasewithdecreasebeca
dcalvesinapa
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hepig’stapeworm
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raphbelowre
didthesquirrehesquirrelpohesquirrelpohepopulationheincreasingecreasedand
torsintheEvedefinestheorabitatopulationcosystemommunity
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netta Haugab
ecordsthenum
elpopulationopulationincropulationincrnincreasedbesquirrelpoputhefoodsupp
ergladesarecganizationall
ectcalledthegstick?ectfrompredectfightoffprectlurepreytectasithuntsatimelinethaere.Thetimeliularanimalsssilrecordbefsilrecordduratlivedintheatlivedintheatlivedinthehatperiod.atlivedinthe
rook – Staff D
mberofindivi
changeandwreasedanddecreasedbecauseecausetheamoulationrosefaplyincreased.
carnivoresthaevelofallthe
walkingstickdators. redators.toitsnest.sforprey.atrepresentedineshowedthsuddenlyappeforetheCambringtheCambrCambrianperCambrianperCambrianperCambrianper
Developer
dualsinasqu
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atcompetewitalligatorsint
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dthehistoryohatduringapeearedinthefobrianperiodshrianperiod.Wriodarestillliriodwereanceriodcouldhavriodwereunr
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theachothertheEverglades
wigwhenitis
oflife.Hisassieriodoftimecossilrecord.SoharedsimilarWhichstatemeivingtoday.estorsofthesvedescendedelatedtothes
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16 | P P M S
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shworkedatasoftencommandexplainthsaredescendrstandotherrnismthatismofossilofafoufossilofafishfossilofatallfossilofatall
bethworkedinpeciesofsalam
alamanderslivhadaccidentat.Theturtleswedtoprotecttytoadapttothicdiversity,wthowtheturtlhelarger‐spoiversitymeanhesmaller‐spiversitymeanhelarger‐spoiversitymeanhesmaller‐spiversitymean
netta Haugab
amuseumgivientedonhowhatsimilaritydedfromacomelationshipsbostcloselyrer‐leggedreptihthathadtuskfour‐leggedmfour‐leggedm
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rook – Staff D
ingtours.Helwthedinosaurbetweendinommonancestobetweenlivinglatedtoelephilethathadask‐likewhiskermammalthathmammalthatw
udiedhowsallookedsimilar
meforest,andeveralexotictintheirneweersfromextinconofexotictur‐spottedsalanwillaffectsaderswouldbehatthepopulanderswouldbhatthepopuladerswouldbeythatthepopunderswouldbythatthepopu
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ovedshowingskeletonfossosaurfossilsanor.Soneshexpgorganismsanhantsasweknshorttailrsgrowingfrohadaverylonwalkedonlan
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bothwerethrurtlestoescapenvironment,action,soshewurtles.Shefounamandershadalamanderpopeindangerofeationcouldadabeindangeroationcouldadaeindangerofeulationcouldbeindangeroulationcould
ggueststhegrilslookedlikendlivinglizarplainedthatthndfossils.Whnowthemtodaomitsfacengneck,notusnd,hadfourtu
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ments.Shewarsity.
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17 | P P M S
dinosaurs.neshwouldsandtoday’spliedtoomefroman
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34. Ricardenviroenvirohowt
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36. Pedigrepres
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dowantedtouonmentalchanonmentalchanhefrogpopula
Popula
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whatcausessocteddatafromparedhowthendedtothechaPOPULATION
OFENypeofchange
abitatloss
troductionofnewpredatorabitatlossngperiodofaughtreadofanewseaseinthedatathabestfitsthedwhenpopulatwhenpopulatiwhenthespeewhenthespee
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roughposedtorelatedto
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Compiled by Johnetta Haugabrook – Staff Developer 19 | P P M S
37. Differentorganismsreproduceindifferentways.Someorganismsareabletoreproduceasexuallywhileothersareonlyabletoreproducesexually.Whatisonewaythatsexualreproductionisdifferentfromasexualreproduction?
A. Sexualreproductioninvolvesmitosis,whileasexualreproductiondoesnot. B. Sexualreproductioninvolvesmeiosis,whileasexualreproductiondoesnot. C. Sexualreproductionproducesmoreoffspringthanasexualreproduction.D. Sexualreproductionproducesoffspringwithlessvariationthanasexualreproduction.
38. Plants,fungi,andmanysingle‐celledorganismsareabletoreproduceasexually.Whatisamaincharacteristicofasexualreproduction?
A. offspringthataregeneticallyuniqueB. offspringthatarenotabletoreproduceC. onlyoneparentorganismthatisrequiredD. spermandeggthatjointhroughfertilization
39. Energygetstransferredthroughthefoodwebasplantsthatproducefoodareconsumedbyanimalsthatconsumeplants.Theenergyisfurthertransferthroughanimalsthatconsumeotheranimals.Whichstatementexplainswhathappenstothisenergywhenaplantdiesbeforeitisconsumed?A. Theenergydisappears.B. Theenergymustgotonewplantsthatgrowoutofdeadorganisms.C. Theenergycanonlygotoananimalscavengerthateatsthedeadorganism.D. Decomposersthatbreakdownthedeadorganismtakeinthestoredenergy.
40. Whichstatementcorrectlydescribestheroleofanherbivoreinafoodweb?A. Anherbivoreonlyconsumesplants.B. Anherbivoreeatsbothplantsandanimals.C. Anherbivoreisascavengerthatfeedsondeadanimals.D. Anherbivoreconvertssunlight,water,andcarbondioxideintofood.
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41. FloridKissimlisteni
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dabiologistsnmmeeRiver.Oingforindivid
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netta Haugab
notedthatafteOnceayear,bedualfrogcalls.
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raph,whatwaamonthinsteodsupplybybhattherewasabe.hatthecountwr,ratherthan
Florida’sbeacnesinplace.Inyplantscangraterfor treesthsupportforpfoodforlarge
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pulationofas95,agroupoftsusedthedat
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ches.Treesdonwhatwayistrow.thatgrowondplantsthathavplantsthatgr
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20 | P P M S
onoftheareaby
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Compiled by Johnetta Haugabrook – Staff Developer 21 | P P M S
GRADE6
SC.6.L.14.1Describeandidentifypatternsinthehierarchicalorganizationoforganismsfromatomstomoleculesandcellstotissuestoorganstoorgansystemstoorganisms.SC.6.L.14.2Investigateandexplainthecomponentsofthescientifictheoryofcells(celltheory):allorganismsarecomposedofcells(single‐celledormulticellular),allcellscomefrompreexistingcells,andcellsarethebasicunitoflife. SC.6.L.14.3Recognizeandexplorehowcellsofallorganismsundergosimilarprocessestomaintainhomeostasis,includingextractingenergyfromfood,gettingridofwaste,andreproducing.SC.6.L.14.4Compareandcontrastthestructureandfunctionofmajororganellesofplantandanimalcells,includingcellwall,cellmembrane,nucleus,cytoplasm,chloroplasts,mitochondria,andvacuoles.SC.6.L.14.5Identifyandinvestigatethegeneralfunctionsofthemajorsystemsofthehumanbody(digestive,respiratory,circulatory,reproductive,excretory,immune,nervous,andmusculoskeletal)anddescribewaysthesesystemsinteractwitheachothertomaintainhomeostasis. SC.6.L.14.6Compareandcontrasttypesofinfectiousagentsthatmayinfectthehumanbody,includingviruses,bacteria,fungi,andparasites.SC.6.L.15.1AnalyzeanddescribehowandwhyorganismsareclassifiedaccordingtosharedcharacteristicswithemphasisontheLinnaeansystemcombinedwiththeconceptofDomains.MultipleChoiceIdentifythechoicethatbestcompletesthestatementoranswersthequestion.
1. Luisismakingachartofcompoundsthatarefoundinthehumanbody.Whatisthemostcommoncompound
foundinthehumanbody?A. waterB. tablesaltC. carbondioxideD. sodiumbicarbonate
2. Kaylahasacatwithblueeyes.Thecolorofhercat’seyesisdeterminedbydeoxyribonucleicacid(DNA).TheDNAdirectswhichsubstancetoconstructtheseeyes?A. lipidsB. waterC. proteinsD. carbohydrates
3. Carbohydratesaremadeupofthreeofthesixmajormoleculesfoundinlivingthings.ThegeneralchemicalformulaforacarbohydrateisCH2O.Whichelementscombinetomakeacarbohydrate?A. copperandcobaltB. chlorineandoxygenC. carbon,helium,andoxygenD. carbon,hydrogen,andoxygen
4. Lingisplanningalonghike.Tomakesurehisbodyhassufficientwater,hepackstwobottlesofwater.Whathappenstobodycellsthatlosetoomuchwater?
A. Thecellsshrivelanddie. B. Thecellsswellandburst.C. Thecellsarenotaffected.D. Thecellsabsorbnutrientsmoreefficiently.
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5. Alejaninthedrops
6. Imagi
thesusurfac
7. EukaryoufiA. cyB. ceC. DD. ce
8. Thefo
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ndroisdoingacellsoflivingsofthemolecu
neacellthathurface‐area‐toce‐area‐to‐vol
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netta Haugab
ascienceexpegthings.Heneuletowater
hastheshape‐volumeratioumeratio
dprokaryoticpesofcells?nucleuseandcytoplasmbrane‐boundoeandmembra
ureshowsapr
rook – Staff D
eriment.Heiseedstofindou
BasconA.B.C.D.
ofacubewithofthiscell.
= surf volu
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leculesfoundaddsafew
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ryoticcellsandinaeukaryotimembrane‐bounucleusandocellmembran
membrane‐bou
organismshanamulticelluAllcellshavethverycellhasaDifferentkindsDifferentkinds
ulticellularorgimportantjobomaintainhomtomakesugarotransportnuotakeinnutri
cellsinmulticothatanorgaothatanorgaothatanorgaothatanorga
edrewthefollsentedbylabe
netta Haugab
dprokaryoticccell?undorganellesorganelleswitneandorganeundorganelles
aveonecell.Otlarorganism?hesamefunctadifferentfunsofcellshavesofcellshave
ganisms,cellsfofallofthesemeostasisrsforenergyutrientsintheientsandelim
cellularorgannismcanelimnismcangrownismcanobtanismcanexch
lowingdiagraelsG1,S,G2,a
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cellshavesom
sandanucleuthoutmembraelleswithoutmsandDNAinc
therorganism?ion.nction.thesamefuncdifferentfunc
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oexaminesaticellsheobser
rahigh‐powemembraneisee?ndoplasmicremitochondrionucleusibosome
ndVinayarestructureisrouwingchoicesdisa’sconclusioisa’sconclusioVinay’sconclusmolecules.Vinay’sconclushotosynthesis
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issuesampleurves.Hissketc
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studyingcellsughendoplasmescribesawaonwouldbesonwouldbessionwouldbesionwouldbes
anorganelleinwingdescribesobservedaceobservedachobservedaribobservedami
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underahigh‐pchisshownhe
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nacellunderawhatHakeemllwalloravachloroplastorabosomeoramitochondrion
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acellularorganheorganellean
oscope.Theyb,butVinaycononeoftheircoheyobservedtheyobservedrtheyobservedtheyobserved
amicroscope.mcouldhaveocuole.alysosome.mitochondrionorachloropla
roscope.Hem
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bothnoticeancludesthatitonclusions?thatthestructribosomespredthatthestrudthatthestru
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Compiled by Johnetta Haugabrook – Staff Developer 25 | P P M S
18. Mariellaisstudyinganewtypeoforganismthatshehasfound.Sheobservesthatthecellsoftheorganismhaveribosomes,mitochondria,andlysosomes.Shealsoobservesthatthecellsdonothaveacellwall.WhattypeoforganismisMariellamostlikelytohavefound? A. aplantB. afungusC. ananimalD. aprokaryote
19. Whenvirusparticlesenteraperson’sbody,thebodyrespondsbyfollowingaspecificpattern.Whichofthefollowingstepshappensearliestinthefightagainstaninvadingvirus?A. Viralparticlesareengulfedbymacrophages.B. Bcellsdividetomakecellsthatcanmakeantibodies.C. HelperTcellsrecognizetheviralantigensonmacrophages.D. KillerTcellsrecognizeviralantigensanddestroytheinfectedcells.
20. Themalereproductivesystemproducesandstoresspermcells.Whatisthefunctionoftheepididymisinthissystem?A. makespermB. storespermC. maketestosteroneD. storetestosterone
21. Atpuberty,hormonesencouragethedevelopmentofsexualcharacteristics.Hormonesalsoaidinreproduction.Whichofthefollowingarefemalesexhormones?
A. corpusluteumB. gonads,gametesC. estrogen,progesteroneD. androgens,testosterone
22. Jefffellwhileplayingbasketballanddislocatedhisshoulder.Jeff’sdoctortoldhimthathehadinjuredanimportantpartofhisskeletalsystem.Butluckily,itwillhealquickly.Whatpartoftheskeletalsystemisinjuredwhenashoulderisdislocated?
A. jointB. spongyboneC. bonemarrowD. compactbone
23. Thehumanmuscularsystemcansufferinjuryordisease.Whichofthefollowingismostlikelycausedbyaperson’sheredity?
A. tendonitisB. musculardystrophyC. amusclestrainD. amuscletear
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gpicture.WhA.B.C.D.
nalhygieneimgmakesitimpodycleanandtkinremovesaldbrushingthe
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atyglandscolumnmembrane
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nfectiousdiseersonersonedobjectedwaterorfoo
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galaboratorytomouskeyan
atstepofthetep1tep2tep5tep6
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29. Selena’steachershowstheclassphotographsoffourdifferentanimals.Theclasshas1mintowritedownthephysicalcharacteristicsofananimalastheyviewitsphoto.Selenamakeshernotesinthefollowingtable.
Animal1 Animal2 Animal3 Animal4•hasgills•hasscales•hasaverticaltailfin•hasonelargefinandonesmallfinonitsback•hasonesetofpairedfins •hastwosinglefinsonbottom•finsarespiny•isdarkcolored
•hasgills•hasveryshinyscales•hasverticaltailfin•hasonefinonitsback •hasonesetofpairedfins•hasonefinonbottom•hassaw‐likeridgesonbackandbottombehindthefins
•hasonefinonitsback•hasflattail•hasonesetofpairedflippers•hassmoothskin•haslong,skinnynose•hasblowholeintopofhead•isgraycolored
•hasfur•hasfourfeet•hasflipperlikerearfeet•haswhiskers•hassharpteeth•ismostlyblackwithlighter‐coloredhead
BasedonSelena’snotes,whichtwoanimalsmaybemorecloselyrelatedtoeachotherthantotheotheranimals? A. 1and2B. 1and3C. 2and3D. 3and4
30. Hankdiscoversanewsquirrelthatlivesnearanothergroupofsquirrels.Thenewsquirrelshaveverydistinctfurcolorsandhaveslightlydifferentearsandtails.Otherwisetheylookmuchthesamephysicallyastheothergroupofsquirrels.HowcanHankbestdetermineifthenewsquirrelsbelongtothesamespeciesastheothergroupofsquirrels?
A. Hecouldstudytheirdiets.B. Hecouldstudytheirbehavior.C. Hecouldstudytheirgeneticmaterial.D. Hecouldstudytheirinternalphysicalstructures.
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60°C.B Thetemperatureofthebenchstaysthesame,whilethetemperatureoftheplatedecreasesto
25°C.C Thetemperatureoftheplateandthebenchbothdecreaseuntiltheyreachatemperatureof0
°C.D Thetemperatureoftheplatedecreasesto30°C,whilethetemperatureofthebenchincreases
to30°C.
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