香港理工大学生物试题.docx

香港理工大学生物试题.docx

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香港理工大学生物试题

SSMSC/2018/Biology

SecondarySchoolMathematics&ScienceCompetition

Biology

Date

:

17thMay,2018（Friday）

Totalno.ofpages

:

24

Timeallowed

:

9:

00-10:

15am（1hour15minutes）

Totalmarks

:

70

Instructions:

1.WriteyourName,SchoolName,Form,DateandCandidateNumberinthespacesprovidedontheM.C.andSectionBStructuredQuestionsAnswerSheetandfilltheappropriateboxes.

2.Whentoldtoopenthisbook,youshouldcheckthatallthequestionsarethere.Lookforthewords‘ENDOFPAPER’afterthelastquestion.

3.ANSWERALLQUESTIONS.

4.DiagramsinthispaperareNOTnecessarilydrawntoscale.

5.ThereareTWOsections,AandBinthisPaper.SectionAconsistsofmultiplechoicequestions.SectionBcontainsstructuredquestions.

SectionA（MultipleChoiceQuestions）

（a）YoushoulduseanHBpenciltomarkallyouranswersontheM.C.AnswerSheet.

（b）Eachquestioncarriesonemark.

（c）YoushouldmarkonlyONEanswerforeachquestion.Ifyoumarkmorethanoneanswer,youwillreceiveNOMARKSforthatquestion.

（d）Nomarkswillbedeductedforwronganswers.

SectionB（StructuredQuestions）

（a）AnswersshouldbewritteninthespaceprovidedontheSectionBAnswerSheet.

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SSMSC/2018/Biology

SectionA：

MultipleChoiceQuestions（55marks）

1.Whichofthefollowingsarethederivativesoffat?

（1）Phospholipid

（2）Steroid

（3）Cholesterol

B.

（1）and

（2）only

C.

（1）and（3）only

D.

（2）and（3）only

E.

（1）,

（2）and（3）

2.ThemonomersofDNAandRNAare

A.Glucose

B.Aminoacids

C.Triglycerides

D.Nucleotides

3.Whichofthefollowinglevelsoforganizationaboutlivingthingsandtheirenvironmentinascendingorderiscorrect?

A.Atom,DNA,molecule,organelle,system,cell,organism,species,community,population,ecosystem,ecosphere

B.Atom,cell,molecule,tissue,organ,system,organism,species,population,community,ecosphere,biome

C.Atom,molecule,cell,tissue,organ,system,organism,species,population,community,ecosystem,ecosphere

D.Atom,compound,molecule,cell,tissue,organ,species,organisms,population,community,ecosystem,ecosphere

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SSMSC/2018/Biology

4.Atemporarymountofonionepidermalcellsispreparedfreshlyandobservedunderthelightmicroscope.Aphotomicrographiscapturedandshownbelow:

Onionepidermalcells（x200）

StructureXis

A.anucleus.

B.astarchgrain.

C.avacuole.

D.anairbubble.

Directions:

Questions5and6refertothediagrambelow,whichshowsastructurePfoundinthelongitudinalsectionofadicotyledonousstem:

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SSMSC/2018/Biology

5.WhichofthefollowingarefunctionsofstructureP?

（1）transportofwater

（2）transportofminerals

（3）givesupporttotheplant

B.

（1）and

（2）only

C.

（1）and（3）only

D.

（2）and（3）only

E.

（1）,

（2）and（3）

6.WhichofthefollowingisderivedfromstructurePoveraperiodoftime?

A.Cork.

B.Wood.

C.Fruits.

D.Aerialroots.

7.DiagramIshowsanaphidwhichfeedsonphloemsapofplantbyinsertingatubularstructureintothesieveelementofastem.DiagramIIshowsacrosssectionofa

vascularbundleofthedicotyledonousstem.

DiagramIDiagramII

Source:

ShipherWu（photograph）andGee-wayLin（aphidprovision）,NationalTaiwanUniversity

WhichpartofthevascularbundleinDiagramIIisthesitewheretheaphidobtainsthesap?

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SSMSC/2018/Biology

Directions:

Questions8and9refertothefollowingsituation:

Marynoticedacosmeticadvertisingstatement‘RepairSerumXcanprotecttheskinfromwrinkledevelopment’andshedoubtedit.Thenshecarriedoutascientificinvestigationwhichaimedtostudyiftheadvertisingstatementiscorrectornot.Shemadeahypothesisthat‘RepairSerumXcanpreventwrinkledevelopmentonskin’,followedbyconstructingthefollowingsetupPandQ:

8.Assumingthatallcontrolvariablesarethesame,whatisthedependentvariableandwhichsetupisthecontrolintheinvestigation?

Dependentvariable

Controlsetup

A.Pig’sskinsmearedwithRepairSerumXornot

P

B.

Pig’sskinsmearedwithRepairSerumXornot

Q

C.

Wrinklesappearornot

P

D.

Wrinklesappearornot

Q

9.IfwrinkledoesnotappearonbothskinsinsetupPandQ,whatconclusioncanbemade?

A.RepairSerumXcanpreventwrinkledevelopmentonskin.

B.RepairSerumXisnotneededforthepreventionofwrinkledevelopmentonskin.

C.Thehypothesisthat‘RepairSerumXcanpreventwrinkledevelopmentonskin’issupported.

D.Noconclusioncanbemade.

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SSMSC/2018/Biology

Directions:

Questions10and11refertothediagrambelow,whichshowsafluid-mosaicmodelofcellmembrane:

10.WhichofthefollowingisnotapropertyofA?

A.Thetailregionisnon-polar.

B.Itallowsions（suchassodiumions）